It appears that your New Zealander was best known as Don Cameron, so maybe it would be better to rename him. But with an article that states Donald Cameron (Scottish rugby union), could it not be confused that he is an administrator of the SRU and not a Scottish rugby union centre. It's a continual problem in sport, and many articles then differentiate through position or date of birth. There are some international Welsh Rugby players who share their names with three or four other team mates. There are two David Jones both forwards who played for Wales, and were both born in 1881, that's a right pain.