Patrick McNamara was born in
North Weymouth,
Massachusetts, to Patrick Vincent and Mary Jane (née Thynne) McNamara, who were
Irish immigrants. The oldest of eight children, he received his early education at public schools in his native town. He attended the local high school for two and a half years before transferring to the
Fore River Apprentice School in
Quincy, where he learned the trade of
pipe fitting. In 1916, he began working as pipe fitter and foreman at the
Fore River Shipyard. He then joined the Stanley-Carter Company, where he served as superintendent of construction, customer contact man, head of labor relations, and vice-president. In 1946, McNamara made his first venture into politics with a successful campaign for an unexpired term on the
Detroit City Council. He won twenty-one of the city's twenty-three wards, and served until 1947. From 1949 to 1955, he was a member of the
Detroit Board of Education. ==U.S. Senate==