Eugene O'Neill | Eugene, Oregon | Eugène Delacroix | Eugene Onegin | Eugène Ionesco | Eugene | Eugene Onegin (opera) | Eugene McCarthy | Pope Eugene IV | Eugène Ysaÿe | Eugene Wigner | Eugene Field | Eugene Aynsley Goossens | Gene Eugene | Harold Eugene Edgerton | Eugene Levy | Eugène de Beauharnais | W. Eugene Smith | Pope Eugene III | Eugene Ormandy | Eugene Jolas | Eugene Fama | Eugene Cernan | Eugène Atget | David Eugene Edwards | H. Eugene Stanley | Eugene V. Debs | Eugene Nickerson | Eugene Chadbourne | Eugene Braunwald |
His father Rigby was an MP for Ipswich (1831–37) before Cathcart was born, and his brother Eugene represented two UK constituencies (South Ayrshire and Clackmannanshire and Kinross-shire) at various times between 1885 and 1918.