Born in Edgefield County, South Carolina, Timmerman received a Bachelor of Laws from the University of South Carolina School of Law in 1902,[1] where he was also head coach of the South Carolina Gamecocks baseball team.
[1] Timmerman was nominated by President Franklin D. Roosevelt on December 18, 1941, to a joint seat on the United States District Court for the Eastern District of South Carolina and the United States District Court for the Western District of South Carolina vacated by Judge Alva M. Lumpkin.
He was reassigned by operation of law to the United States District Court for the District of South Carolina on October 7, 1965, pursuant to 79 Stat.
His service terminated on April 22, 1966, due to his death in Columbia, South Carolina.
[1] Timmerman's son, George Bell Timmerman Jr., became Governor of South Carolina and a state circuit judge in South Carolina.