Too many Kynochs! But easy to get them mixed up especially since we've been looking at George William and his younger brother James Henry who both worked in Hong Kong.

George William b 1882/1883 married Annie Ruth Cooper in Rangoon 1899. Thank you for getting that information. So far I can't find any other information about their marriage.

However on FS there is a possible Annie Ruth Cooper b1877 Rangoon. Parents William Cooper and Anne Ruth.
There is also a death of Ann Ruth Cooper in 1881 age 29 wife of William Cooper.

There is a possible marriage in Madras( not Rangoon) in 1868.
Ann Ruth McIntyre, father Peter McIntyre and William Cooper , father Charles.
Children to this couple in Madras
Georgianna Elizabeth 1869
William Arthur 1871
Alice Jane 1873
Charles Edwin 1875
and then Annie Ruth 1877 in Rangoon . This would assume a move from Madras to Rangoon.

Going back to George William Kynoch and wife Annie.
They had James George 1900 Hong Kong then Clyde William 1903 Scotland d 1909
and possibly Reginald Lawrence 1905 Hong Kong d Hong Kong

Hope this helps.