Potential face claims for Albus Dumbledore:

NAME: Richard Harris
DATE OF BIRTH: 1 October 1930
NATIONALITY: Irish
EYE COLOUR: blue
HAIR COLOUR: white/brown

NAME: Michael Gambon
DATE OF BIRTH: 19 October 1940
NATIONALITY: Irish and British
EYE COLOUR: blue
HAIR COLOUR: grey/brown

NAME: Togo Igawa
DATE OF BIRTH: 26 September 1946
NATIONALITY: Japanese
EYE COLOUR: black
HAIR COLOUR: white/black

NAME: Toby Regbo
DATE OF BIRTH: 18 October 1991
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: blonde/red

NAME: Ewan McGregor
DATE OF BIRTH: 31 March 1971
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: red/blonde/brown

NAME: Paul McGann
DATE OF BIRTH: 14 November 1959
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: brown/red

NAME: Eddie Redmayne
DATE OF BIRTH: 6 January 1982
NATIONALITY: British
EYE COLOUR: green
HAIR COLOUR: red/brown/black/blonde

NAME: Jude Law
DATE OF BIRTH: 29 December 1972
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: brown/black/blonde

NAME: James McAvoy
DATE OF BIRTH: 21 April 1979
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: brown/black

NAME: Matthew Macfadyen
DATE OF BIRTH: 19 October 1974
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: brown

(suggested by kencbi)