Svetozar Trlajich (Светозар Трлајић) was the son of Stephen and Jelisaveta (maiden name Karakaševich). He was born in Mol on July 18, 1884. His education included primary school in his hometown, grammar school in Novi Sad, and seminary in Sremski Karlovtsy. Svetozar graduated from the Faculty of Law at the University of Belgrade and passed the qualifying examination for judges at the Faculty of Law in Zagreb.