He was in turn succeeded as the 3rd Baron by his son, the satirist and television personality Patrick Campbell.
Charles was educated at Charterhouse School and was a barrister who met and married Beatrice Elvery.
[1] He was a contemporary of D. H. Lawrence, to whom he was introduced by Katherine Mansfield and John Middleton Murry on 26 July 1913.
From 1925 Campbell's influence decreased, being opposed to Patrick Hogan's policy of economic support for the larger farmers.
[3] From 1932 to 1963, Campbell served as president of the council of the Royal Victoria Eye and Ear Hospital.