The Fenian raids never reached Lambton. Their military legacy did.

In 1866, fears of an Irish republican invasion brought soldiers into Sarnia, volunteers onto the St. Clair River and disruption to everyday life. The Fenian raids never reached Lambton, but the threat helped establish the county’s first permanent military battalion. Day 4 of our 11 Days of Remembrance series examines the lasting consequences of an invasion that never came.

In March 1866, soldiers inspected travellers’ baggage in Sarnia while railway locomotives stood ready in case residents needed to evacuate. Across the St. Clair River, rumours spread that hundreds of armed Irish republicans were gathering near Port Huron, preparing to invade British territory.

One account placed 700 fighters near the Michigan town. Another claimed men had been seen crossing the frozen river at Froomfield. An invasion was expected on St. Patrick’s Day, March 17.

It never came.

But the threatened attack brought troops into Sarnia, placed volunteers on patrol along the river and helped establish an enduring county-wide infantry battalion. Its history would extend far beyond the border it was created to defend.

The movement behind the threat had its origins in Ireland, where generations of British rule, political repression and the devastation of the Great Famine had helped sustain demands for independence.

The Irish Republican Brotherhood, established in 1858, sought to end British control and establish an independent Irish republic. Its American counterpart, the Fenian Brotherhood, attracted Irish emigrants, including veterans of the recently concluded American Civil War.

For some Fenian leaders, British North America offered a way to strike at the empire without crossing the Atlantic. They believed capturing colonial territory could force Britain to negotiate over Irish independence, provoke a wider war or provide a base for further attacks on British interests.

Not all Irish republicans agreed with this strategy. Some favoured directing their resources toward an uprising in Ireland itself.

The proposed invasion also depended on assumptions about the people living in British North America. Fenian leaders hoped Irish Catholics might support them and that other colonial populations would remain neutral. Those expectations would prove unreliable.

For communities along the St. Clair River, the prospect of an armed incursion was familiar. The Patriot attacks of 1838 had already demonstrated the vulnerability of settlements along the international boundary and prompted local militia mobilization.

Twenty-eight years later, a different political movement was preparing to challenge British authority from American territory.

Sarnia was considered particularly vulnerable because of its proximity to Port Huron and its railway connections to London and other communities farther east. An invading force could potentially use those routes to move beyond the riverfront.

The colonial government began sending troops into threatened border communities before the first Fenian attack. By early 1866, Sarnia was accommodating volunteer infantry from elsewhere in Canada West.

Historical accounts compiled from contemporary editions of The Observer describe soldiers arriving by train at Point Edward, marching into Sarnia and being assigned quarters.

The Alexander House, Hall’s Hotel and private homes accommodated troops. Military parades occupied public spaces, while volunteers watched the waterfront for signs of movement from Michigan.

The preparations also disrupted ordinary civic life. A history of Sarnia’s early schools, drawing on school board records, notes that the board’s regular March meeting was not held because of the Fenian threat.

Although the anticipated St. Patrick’s Day invasion failed to materialize, the danger did not entirely disappear.

On June 1, 1866, Fenian fighters crossed the Niagara River and occupied Fort Erie. The following day, they defeated a force of Canadian volunteers at Ridgeway.

Many of the Irish republican fighters were experienced Civil War veterans, while the Canadian militia they encountered had comparatively little battlefield experience.

The Fenian victory was real, although the invasion ultimately failed. Unable to secure the reinforcements and supplies necessary to continue, the raiders withdrew to the United States. American authorities intervened to prevent further expeditions, arresting participants and seizing weapons and equipment.

Other planned attacks were abandoned or unsuccessful.

No documented Fenian raid reached Lambton, but the fighting elsewhere demonstrated that the threat could not be dismissed as entirely imaginary.

Military mobilization also brought problems of its own.

In April 1866, smallpox appeared in a boarding house accommodating members of the Wardsville Volunteers. A military hospital was established, and a report published in The Observer on June 1 described 17 soldiers being treated at one point.

The newspaper subsequently reported that the affected soldiers had recovered. Contaminated clothing and uniforms had been destroyed, however, leaving military authorities struggling to replace the men’s equipment.

South of Sarnia, residents also organized to defend the riverfront.

George Stewart, a Courtright businessman, raised a mounted volunteer force of approximately 70 men in 1866. According to the Commemorative Biographical Record of Lambton County, the unit was stationed at Mooretown and assigned to guard the waterfront between Sarnia and Sombra.

The mounted volunteers formed part of a wider military response that drew on communities throughout the county.

Lambton already had colonial militia organizations. Surviving records identify men enrolled for service during the rebellion and Patriot War of 1837–1838, while volunteer companies had also been organized in the years preceding the Fenian emergency.

The new threat encouraged a more enduring structure.

On September 14, 1866, the colonial government formally authorized the 27th Lambton Battalion of Infantry, with headquarters in Sarnia.

Its seven infantry companies were based in Sarnia, Oil Springs, Mooretown, Widder, Warwick, Moore and Watford. A Sarnia garrison artillery battery, organized separately from the infantry, was also attached to the battalion.

Lieutenant-Colonel Frederick Davis commanded the battalion. Davis was also Sarnia’s mayor during 1866 and 1867, placing one of the town’s leading civic officials at the head of its new military organization.

The battalion brought existing and newly organized volunteer companies into a continuing county-wide formation, with officers, recruitment and training responsibilities.

Its members were part-time volunteers who could be called into active service when required, rather than full-time professional soldiers.

The county’s colonial militia history stretched back decades, while the military histories of the Anishinaabe peoples of the St. Clair River extended long before those institutions existed.

The significance of 1866 was the establishment of an organized battalion that would survive the immediate emergency.

The new institution reflected the priorities of the colonial government, but the population it purported to defend was not politically united.

Sarnia had a substantial population of Irish ancestry. Historian Jacqueline McIsaac, examining the 1871 census, found that people of Irish descent accounted for nearly 27 per cent of the town’s population.

Their views on Irish independence, British authority and the Fenian raids were far from uniform.

Some supported the republican cause. Others opposed the proposed invasion, even where they sympathized with demands for political change in Ireland. Supporting Irish independence did not necessarily mean endorsing Fenian military strategy or participating in preparations for an armed attack.

McIsaac’s research into colonial intelligence records identified connections between Fenian organizers in Port Huron and people in Sarnia.

One figure monitored by investigators was John Atkinson, a Port Huron lawyer associated with the Fenian movement who travelled regularly into Sarnia and surrounding communities.

Colonial authorities watched such movements closely, but suspicion did not always amount to evidence of participation in an armed conspiracy.

In an account published in May 1868, The Sarnia Observer acknowledged that some residents sympathized with Fenianism but said they had generally been allowed to live undisturbed among their neighbours.

A colonial intelligence report that year also characterized Irish residents of Corunna and Mooretown as opposed to the movement.

The differing accounts reveal a more complicated community than the image of a population unanimously united against invasion.

They also expose the prejudice surrounding the emergency. Irish Catholics could be suspected of Fenian sympathies simply because of their religion, despite the fact that political opinion within Irish Catholic communities varied considerably.

For some residents, therefore, the threat came not only from possible armed attacks across the river, but also from the suspicion directed at their own communities.

The military emergency returned in 1870.

A newspaper report published in April described orders for Mooretown volunteers to undertake mounted service along the river. Stewart again participated in border defence.

An official militia return dated May 28, 1870, records the 27th Battalion stationed at Sarnia under Davis, with 24 officers and 224 other ranks. The Mooretown Mounted Infantry had three officers and 39 men, while a London field artillery detachment supplied three officers, 30 men and two guns.

The records show that organized military deployments continued several years after the first alarm.

Fenian incursions into Quebec in 1870 were defeated, and an attempted invasion of Manitoba in 1871 also failed. United States authorities acted against the expeditions, frustrating the movement’s hope that American territory and political support would provide a secure base for attacks on British North America.

The raids nevertheless had consequences beyond their military outcomes.

They strengthened arguments for Confederation in 1867 by demonstrating the vulnerability of British North American colonies and the advantages of coordinated defence. Plans for political union and militia reform had already been developing, but the Fenian threat added urgency to both.

For Lambton, the effects lasted much longer.

In 1872, the 27th Lambton Battalion received the formal designation St. Clair Borderers. It became the 27th Lambton Regiment in 1900 and The Lambton Regiment in 1920. Its subsequent military history was connected to the 70th and 149th battalions of the Canadian Expeditionary Force during the First World War.

Its origins also reflected a contradiction that ran through the region’s military history.

The Fenians were seeking freedom from British rule in Ireland. By attempting to achieve it through attacks on British North America, they helped strengthen the military institutions of another colonial society.

Those institutions defended British authority along a river that remained part of the homeland of the Anishinaabe peoples. Colonial border security and Indigenous sovereignty were not the same thing.

The battalion established during the Fenian emergency would eventually become part of a military system whose responsibilities extended well beyond defending that border.

Among its later members was Daniel Crone, who enlisted for service in South Africa in January 1900. He died of typhoid fever in Johannesburg that August, aged 24.

The military organization established to protect Lambton from invasion had become a source of volunteers for Britain’s wars overseas.

About this reporting

This article is part of The Sarnia Journal’s 11 Days of Remembrance series, examining military conflicts through the histories of people who lived in the region now known as Sarnia-Lambton.

Accounts of the Fenian emergency in Sarnia draw on contemporary newspaper material examined by historian George Mathewson, historical writing by Edward Phelps and resources maintained by the Sarnia Historical Society. The smallpox outbreak was also examined by Phil Egan in The Sarnia Journal’s 2017 historical feature on Sarnia at Confederation.

The establishment, officers and original companies of the 27th Lambton Battalion are documented in the official Annual Volunteer and Service Militia List of Canada, March 1, 1867. The 1870 deployment figures come from the federal government’s official militia return.

The account of George Stewart’s mounted volunteers draws on the Commemorative Biographical Record of Lambton County, published in 1906.

Research into Irish republican organizing, public attitudes and colonial surveillance draws on historian Jacqueline McIsaac’s 2008 University of Guelph thesis, Running in Circles: Fenianism in Rural and Small Town Ontario, 1865–1868, which examines contemporary newspapers, census records and colonial intelligence correspondence.

The article distinguishes documented military activity from contemporary rumours of invasion, and treats allegations recorded by colonial investigators as historical evidence of surveillance rather than proof of individual involvement in an armed conspiracy.