Thomas Fagan Wallace (1874-1951) was an agricultural chemist. He was born 4 February 1874 at Talysarn, Caerns. He was the son of James Wallace and Katherine Fagan. He started his education at his local school called Denstone college and then moved onto Gonville & Caius college situated in Cambridge, England and graduated in 1898. After graduation, for a short time he became a chemistry master at Abertillery secondary school before going onto studying under two professors Winter and Dobbie at Bangor University. From then on, he had an extensive academic career.