Lowcock married Annie Loftus Russell on 7 June 1873 at St John's Cathedral, Hong Kong. According to her inscription on their shared gravestone in Wimbledon, London, "our only child" was Henry Christopher, buried in Hong Kong. He was born and died on 31 May 1874, according to his gravestone in Happy Valley cemetery, HK. Henry had 3 other children by at least one other woman. Lowcock was one of the earliest supporters of the Diocesan Home and Orphanage (now the
Diocesan Boys' School, Hong Kong). He and Annie settled in the UK after his retirement from Gibb and Livingston Co. He died on 31 July 1901 in Wimbledon, Surrey. George's other son Henry married Mabel Kotewall, daughter of Robert Kotewall's brother Samuel. Henry Lowcock served in the No.320 Maintenance Unit of the
Royal Air Force during the
Second World War, and was killed in a shop accident in
Karachi. His son, Sidney James Lowcock, was the seventh headmaster of
Diocesan Boys' School from 1961 to 1983. ==References==