Arthur Douglas Cotter (1878-1918) (1878–1918) Parents James Lawrence Cotter Frances Symington Ironside Children Frances Marion Louise Cotter James Guthrie Sackville Cotter George Clinton Solmes Cotter Siblings unknown twin Cotter Agnes Mary Cotter George Sackville Cotter Katherine Cotter Ada Margaret Cotter Wemyss McKenzie Osborne Cotter Oliver Wendell Holmes Cotter James Laurence Rogerson Cotter unknown twin Cotter Henry Martin Stuart Cotter Evadne Kilgour Cotter Anne Winifred Ruth Cotter Partners Marion Church Solmes