Tom Branson is a fictional character from the British television series Downton Abbey. He is introduced as the Irish chauffeur for the Crawley family and becomes a significant part of their lives. Tom is known for his strong political beliefs and his support for Irish independence, which often puts him at odds with the traditional values of the aristocratic family. Throughout the series, Tom evolves from a working-class outsider to a respected member of the household. He eventually marries Sybil Crawley, the youngest daughter of the family, which further intertwines his life with the Crawleys. Tom's character represents themes of social change and class struggle in early 20th-century England.