Arthur John Macarthur-Onslow (1873-1953) (1873–1953) Parents Elizabeth Macarthur-Onslow Arthur Alexander Walton Onslow Children Robert Carstairs Macarthur-Onslow Rosalind Sheila Macarthur-Onslow Robina Elizabeth Macarthur-Onslow Richard Walton Macarthur-Onslow Siblings James Macarthur-Onslow Arthur William Macarthur-Onslow Arthur Macarthur-Onslow George Macarthur-Onslow Emily Susan Macarthur-Onslow Rosa Sibella Macarthur Onslow Partners Christian Leslie Bell