Robert Bateson McMahon (1840-1894) (1840–1894) Parents Sir Beresford Burston McMahon, 2nd Bt. Maria Catherine Bateson Children Siblings Maria Constance Georgiana McMahon Frances Thomasine McMahon Catherine Charlotte McMahon Sir William Samuel McMahon, 3rd Bt. Nina Gertrude McMahon Beresford Burston McMahon Gerald Charles McMahon Sir Lionel McMahon, 4th Bt.