I've no evidence to suggest they're the same people, except their names being the same in English & Mandarin...

http://www.hkmdb.com/db/people/view.mht ... ay_set=eng
http://www.hkmdb.com/db/people/view.mht ... ay_set=eng

If they're different people, shouldn't they have (1) and (2) on their name?

Numbered.