Vault / David Williamson David Williamson Acting 3 credits Share X f r w ⧉ Copied! Biography Biography coming soon. Ask the Vault Ask anything about David Williamson. Ask What are they best known for?What kind of roles do they play?What should I watch them in? Known for Shamelessas Mr. Bennett Film Moon 44as Lt. Gallagher Full filmography Shameless (2004) as Mr. Bennett Queer as Folk (1999) as Bob Green Moon 44 (1990) as Lt. Gallagher