An uncle of Prince Philip and a second cousin once removed of Queen Elizabeth II, Mountbatten was a man of monstrous vanity and had reportedly been a target of the Provisional IRA long before his assassination in 1979.

Source: https://www.irishcentral.com/roots/history/who-was-lord-louis-mountbatten

Fresh guidance on security measures at the homes of public figures was agreed in 1991 after a spate of Provisional IRA (PIRA) attacks in Great Britain.

Source: https://www.expressandstar.com/news/uk-news/2023/12/28/fresh-security-guidance-issued-to-public-figures-in-1991-after-pira-attacks/

Jimmy Speer who was murdered by the Provisional IRA in Desertmartin on November 9 1976.

Source: https://www.northernirelandworld.com/news/people/mid-ulser-law-student-whose-grandad-was-murdered-by-ira-set-to-attend-peace-conference-4188515