Herbert Hoover | Sir | Sir Walter Scott | Herbert Kitchener, 1st Earl Kitchener | Herbert von Karajan | Frank Herbert | Sir Arthur Conan Doyle | Herbert Marcuse | Sir Robert Peel | Herbert Read | Strange Case of Dr Jekyll and Mr Hyde | Herbert Blomstedt | Herbert Grönemeyer | Herbert Beerbohm Tree | Sir Arthur Harris, 1st Baronet | Matthew Herbert | Herbert Spencer | Victor Herbert | Sir Raylton Dixon | Sir Harold Hillier Gardens | Sir Fitzroy Maclean, 1st Baronet | Herbert | Sir Francis Baring, 1st Baronet | Herbert A. Simon | George Herbert | Charles Herbert Best | Sir William Temple, 1st Baronet | Herbert Howells | George Herbert, 5th Earl of Carnarvon | Brian Herbert |
McKenna was married in 1908 to Pamela Jekyll (who died November 1943), younger daughter of Sir Herbert Jekyll, KCMG (brother of landscape gardener Gertrude Jekyll) and his wife Lady Agnes Jekyll, née Graham.