Royal Irish Constabulary (RIC) Detective Oswald Ross Swanzy is shot dead by Cork Irish Republican Army (IRA) volunteers while leaving church in Lisburn, County Antrim, on August 22, 1920.

Swanzy lives at 31 Railway Street and attends Morning Service at the Cathedral. At 1:06 p.m. as he is walking past the entrance to the Northern Bank (now Shannon’s Jewelers), he is shot by the IRA and dies at the scene.

A 39-year-old single man from County Monaghan, he had been a member of the police for 15 years. His funeral takes place at Mount Jerome Cemetery, Harold’s Cross, Dublin three days later.

In February 1921, a memorial is erected in the north wall of the Cathedral by his mother and sister. The brass tablet mounted in Irish Oak bears the following inscription:

“In proud and loving memory of Oswald Ross Swanzy DI Royal Irish Constabulary who gave his life in Lisburn on Sunday, August 22, 1920, and his gallant comrades who, like him, have been killed in the unfaltering discharge of their duty and in the service of their country. Be thou faithful unto death and I will give you a crown of life.”

In his book, Police Casualties in Ireland 1919 to 1922, Royal Ulster Constabulary (RUC) Inspector Richard Abbott says the decision to kill Swanzy is taken by Michael Collins himself who believes the officer had been the leader of the party of unidentified men who killed Tomás Mac Curtain, the Lord Mayor of Cork and Commandant of Cork Number One Brigade of the IRA.

With the help of RIC Sergeant Matt McCarthy, who had provided Collins with information in the past, Swanzy is traced to Lisburn. The Intelligence Officer of B Company of the IRA’s First Cork Battalion, Sean Culhane, is then sent to Belfast to link up with local IRA activists. On the day of the attack, Culhane and a number of Belfast IRA men leave the city in a taxi and make their way to Lisburn.

Culhane and Roger McCorley, a Belfast member of the IRA, walk up to Swanzy and shoot him at close range. They, along with their accomplices, then run in pairs along Castle Street with another man in the middle of the road. They continue to fire as they make their way to the taxi which is waiting outside the Technical College.

The vehicle starts to move off before McCorley reaches it and he is forced to throw himself into the car. As he does so he lands in a heap on the back floor of the car and accidentally fires a round from his revolver inside the taxi.

A member of the public notes the taxi’s number as it leaves Lisburn and the driver is arrested later that afternoon. He tells police he works for the Belfast Motor Cab and Engineering Co. at Upper Library Street. At 11:45 a.m., he says he had been sent to the Great Northern Railway Station in Great Victoria Street to collect a fare who wanted to “take a run along the County Down coast.” The taxi driver is later tried for the killing of Swanzy but is found not guilty.

The IRA killing of Detective Inspector Swanzy leads to bitter sectarian rioting in Lisburn. A number of Catholics are murdered and others assaulted and terrorised as their homes and businesses are burned by mobs on the rampage. Journals kept at the time recall how groups of people wait at Lambeg to attack Catholics fleeing the town on the main Belfast Road. This forces many to leave Lisburn by way of the mountain route into the city as columns of smoke rise into the air above the town.

Workers at local mills are also called upon to sign the following declaration: “I…. …hereby declare I am not a Sinn Féiner nor have any sympathy with Sinn Féin and do declare I am loyal to king and country.” Violence also sweeps across Belfast in the wake of the Market Square attack.

A total of 22 people are killed in one week and on August 24 the authorities swear in a number of special constables to try to regain control of the situation. This is the first time since the start of the IRA campaign in 1919 that Special Constables have to be used.

(From: “Assassination of Detective Inspector Oswald Ross Swanzy,” Lisburn.com)