You have been so helpful, may I ask for one more piece of advice. I think it is possible that Margaret Maxwell Anderson who married Thomas Cuthbertson in 1875 and Marion Fullarton Anderson who married his brother John Reid Cuthbertson, presumably also in Singapore since their son was born there, may have been sisters. There is a witness signature on the 1875 marriage which could read Marion. Is there anywhere I could go which would help to prove this theory?
Sorry to bother you again.