Lucan

This name is also used in Arthurian Romance. As an earlier commenter said, Lucan is also the name of a Knight of the Round Table: Lucan the Butler. He is the brother of Bedivere and the cousin of Griflet. He is very loyal, and in most accounts, he is one of the last knights at King Arthur’s side at the Battle of Camlann. He is usually depicted as the last knight to die, although in one source, he is the one who throws Excalibur back to the Lady of the Lake.

https://en.wikipedia.org/wiki/Lucan_(TV_series).

Lucan (now Lucan Biddulph) is a town in Middlesex County, Ontario. The Donnelly Massacre took place in Lucan in the 1880s. It is predominately a farming town.

Lucan is also the anglicised name of a town near Dublin in Ireland. Its name in Irish is Leamhcán, meaning "place of the elms."

A famous bearer is Lucky Lucan, formally known as Richard John Bingham, 7th Earl of Lucan (born 18 December 1934). He disappeared on on 8 November 1974 after he allegedly murdered his children's nanny Sandra Rivett and attacked his wife. A lot of people believe he did it, but Lucan still hasn't been found and there are many theories around his disappearance. Lucan is now presumed dead. http://en.wikipedia.org/wiki/Richard_Bingham,_7th_Earl_of_Lucan

Sir Lucan was one of the Knights of the Round Table. In the different accounts of King Arthur, Sir Lucan is always depicted as loyal and the last to leave the battlefield. http://en.wikipedia.org/wiki/Sir_Lucan