 Described by David Cargill as a "roaring pansy", Henderson was known for his effeminate demeanour, once opening a speech in the House of Lords with the words "My dears" instead of "My Lords".His marriage, to the Hon.Honor Chedworth Philipps (the daughter of Owen Philipps, 1st Baron Kylsant), lasted only four years (consecrated in 1927; annulled in 1931).