 On 24 October 1848, he was appointed colonel of the 3rd West India Regiment.He died in 1849 at Dún Laoghaire after a long illness and is buried at Collins Barracks, then known as the Royal Barracks, in Dublin.Sir Guy's descendant, Sir Guy Campbell, 5th Baronet was baronet from 1960 until his death in 1993, and the current baronet is his son, Lachlan Campbell.