caption years_active birth_name birth_place birth_date image article_title name occupation
leech of tintin : the secret of the unicorn '' , at 2011 . the london premiere of '' the adventures 1998 -- present alan leech killiney , county dublin , ireland 18 may 1981 allen 2011.jpg leech , adventures of tintin , london , allen leech
 allen leech actor
allen leech

allen leech -lrb- born 18 may 1981 -rrb- , and known in his early career by his birth name alan leech , is an irish stage , television and film actor .
a native of killiney , leech made his professional acting debut with a small part in a 1998 production of `` a streetcar named desire '' .
he made his first major film appearance as vincent cusack in `` cowboys & angels '' and earned an irish film & television awards nomination in 2004 with his performance as mo chara in `` man about dog '' .
leech came to international attention as marcus agrippa on the hbo historical drama `` rome '' and is best known for his role as tom branson on the costume drama `` downton abbey '' .
