Seán Keenan

Seán Keenan (1914 was an Irish republican from Derry, Northern Ireland. His father Seamus Keenan was a Quartermaster in the Irish Republican Army (IRA). He spent a total of 15 years in jail despite never being convicted of an offence. Keenan was first arrested in 1935 for carrying an Irish flag. He was again interned during the IRAs Border campaign and again during the period of conflict known as The Troubles. While interned on , Keenan was the Commanding Officer of the Provisional IRA prisoners there. Keenan was chairman of the Derry Citizens Defence Association between July and October 1969 and played a prominent role in the events surrounding the creation and defence of Free Derry, including the Battle of the Bogside.

During the 1970 split within Sinn Féin and the IRA, Keenan sided with the Provisional faction; and later sided with Republican Sinn Féin during the 1986 split. In the late 1980s, he was made honorary Vice-President for life of the party until his death.

His son, also named Sean, was a Sinn Féin councillor.