Potential face claims for Aberforth Dumbledore:

NAME: Ciarán Hinds
DATE OF BIRTH: 9 February 1953
NATIONALITY: Irish
EYE COLOUR: brown
HAIR COLOUR: greying/brown/black

NAME: John Gielgud
DATE OF BIRTH: 14 April 1904
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: greying/brown

NAME: Colin Morgan
DATE OF BIRTH: 1 January 1986
NATIONALITY: Irish
EYE COLOUR: blue
HAIR COLOUR: black

NAME: Hugh Laurie
DATE OF BIRTH: 11 June 1959
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: greying/brown/blonde

NAME: Damian Lewis
DATE OF BIRTH: 11 February 1971
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: red

NAME: Asa Butterfield
DATE OF BIRTH: 1 April 1997
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: black

NAME: Michael Fassbender
DATE OF BIRTH: 2 April 1977
NATIONALITY: German and Irish
EYE COLOUR: blue
HAIR COLOUR: blonde

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

NAME: Brendon Beck
DATE OF BIRTH: unknown
NATIONALITY: American
EYE COLOUR: blue/green
HAIR COLOUR: blonde

NAME: Max Irons
DATE OF BIRTH: 17 October 1985
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: light brown

NAME: Robert Emms
DATE OF BIRTH: 20th of May, 1986
NATIONALITY: British
EYE COLOUR: Blue
HAIR COLOUR: Brown

(suggested by LeviosaDragon and kencbi)