Nope, they're not the same person... but they're brothers, and we appear to have 2 entries for each of them

Source: Jayne Stars

Gregory Lee Wing-Ho:

http://hkmdb.com/db/people/view.mhtml?id=6885&display_set=eng
http://hkmdb.com/db/people/view.mhtml?id=7758&display_set=eng

Alexander Lee Wing-Hon:
http://hkmdb.com/db/people/view.mhtml?id=7784&display_set=eng
http://hkmdb.com/db/people/view.mhtml?id=24118&display_set=eng maybe?

Thanks to Detective Fan for the link

if nobody stops me in 15 days I will merge Gregory Lee and Lee Wing Ho

not sure if Alexander Lee is Lee Wing Hon

merged

Lee Wing-Ho
李詠豪
Aliases: 李泳豪
Cantonese: Lee Wing Ho
Mandarin: Li3 Yong3 Hao2



Actor
Seven Warriors (1989)
Forever Young (1989) ... Cheung (kid)
The Dragon Fighter (1990)
Chicken a La Queen (1990) ... Sgt Mak's Son
Family Day (1990)

and

Gregory Lee Wing-Ho
李泳豪
Actor
Lady in Black (1987)
The Young Ones (1999)
Troublesome Night 7 (2000) ... Ho (Hung's son)
Those Were the Days (2000)
Story of Prostitutes (2000)
Thou Shall Not Commit (2001) ... Henry Li Ho Fung (cafe cook)
Hot Rod (2001)
City of Desire (2001)