William Charles Weir was born in 1872 in Ballarat, Victoria, Australia.

He married Sarah Elizabeth Tolliday who was the daughter of John Curtis and Sarah Tolliday (nee Miles).

John was one of four children who sailed to Australia from Southhampton with his widowed mother Jane Curtis Tolliday in 1854. His siblings were William, Christiana and Elizabeth.

William and Sarah Weir were married and had children which started the Weir line of the Tolliday Clan.

William Weir passed away in 1955. His wife Sarah passed away in 1949.