I have the following information: Stephanus Thomasz born 16 April 1773 married Antonella Helena Giller 7 Sep 1795 at Wolvendahl Church, Colombo. Their son Benjamin Thomasz born 16 July 1800 married Engeltina Maria Hansen (Jansen?) on 26 April 1820. Their son Francis Stephen Thomasz born on 4 May 1822.His son Owen Charles Thomass born 1858 died 1940 married Evelyn Ebert born 1864 died 1950. Their son Herbert Morton Melville Thomasz(presumably brother of Neville Sheldon Thomasz) born on 14 Oct 1892 married Lilian Margaret Van Geyzel on 15 Sep 1919. Their son Derrick Owen Clifford Thomasz born 6 Nov 1929 died 1989 in GeorgeTown, Penang. He was the author of a book of memoirs published in 1989 titled "Beginning to dream" from which the above information was culled. I alsohave another book "Ceylon in my time' by Dorothy Bartholomeusz (nee Thomasz)published in 1986 which alludes in some detail to the Thomasz family. You may also refer to the posts under the Armitage family in Ceylon one of whose descendants married a Thomasz a reputed 19 th century lawyer in Kalutara, Ceylon Please contact me should you requiremore detail.