As a British Citizen from the Colony of Ceylon the British Army or any other service should have accepted him. This extract comes from the same source as his French Foreign Legion records and contains vast amounts of Barhoiomeusz genaealogy. The following is slightly edited by me.
Louis Ursinus Barthoiomeusz, born 11th April 1857, died 1st June1925, married in Christ Church, Matale [Ceylon], 5th June 1878, [to] Julia Ursula del Sielwie born 29th May 1863, died 26th October 1930, daughter of Dionygaas de Sielwie and Cornelia Petronella Dorothea Rabot. Hejhad lly her [?] . [First son] : Julian Strange [Barthoiomeusz], born 6th July 1879. died 19th September 1941 [where?]