George William Collette, Surveyor, born at Jaffna, 9th September 1842, died at Negombo, 1930 ... married at Batticaloa ... 26th December 1865, Theodora Frederica de Koning, daughter of Henricus Harmanus de Konig and Dorothea Theodora Collette...
Of the first marriage, he had: Gertrudia Theodora, born 16th March 1869, married:
(a) In St. Joseph's Church, Batticaloa, 9th September 1897, Patrick Austin Moran Treahy.
(b) In the Reigstrar's Office, Batticaloa, 5th June 1907, Edward Bingham Jonklaas, Inspector of Police, born 18th September 1862, son of Henricus Cornelis Jonklaas and Agnes Susanna de Vos. (from The Journal of the Dutch Burgher Union.)