Hi Christopher, At last-another Betten researcher. I have Thomas Alexander Colville (27) & Christine Ethel Maud Betten's (19) mrge cert of Sept.7, 1921. Your dates are correct, except I have no record of Mona Mary b. 1908. I have Lloyd Andrew Betten b.1901, Noel Raymond Betten b.1904, Iris Mervyn Isabella Betten b.1907 & Christina Ethel Maud Betten b. 1902 - all children of Jacob Heyen Betten & Mary nee Hamilton.I also have an article covering Jacob & Mary'swedding at Eiverview?? Makikihi. If you would like to contact me please do - hannahix at kol dot co dot nz. It would be good fill in some of the missing pieces and I'll be happy to share what info I have. Regards, Joan.