Arthur Forbes-Sempill Royal Navy admiral (1877–1962) Parents William Forbes-Sempill, 17th Lord Sempill Frances Emily Abercromby Children Janet Forbes-Sempill Sir John Alexander Cumnock Forbes of Craigievar, 12th Bt. Siblings John Forbes-Sempill, 18th Lord Sempill Katherine Charlotte Elizabeth Stewart Forbes-Sempill Evelyn Courtenay Forbes-Sempill Partners Muriel Emily Spencer Mary Cutting Holland Cummock Helen Mabel Allen