Tom Cullen: Tom Cullen. Actor: Weekend. Thomas Cullen is a Welsh actor and director. He had roles in the independent film Weekend (2011), as Anthony Foyle, Viscount Gillingham in the television series Downton Abbey, and as Sir Landry in the historical drama series Knightfall. Cullen was born in Aberystwyth. He is the son of two writers. His father is Irish and his mother is English. He spent his early years in Llandrindod...