In 1953 he married Ljiljana Marjanović, a history professor at Belgrade primary school "Vuk Karadžić", where she also worked as school director from 1980 to 1990. Ljiljana graduated from the Belgrade University of Philosophy. She was also the president of the Belgrade Historical Society and a member of the Serbian Historical Society. Radomir also attended this school, formerly known as the Palilula Primary School, from 1932 to 1936, as did members of Ljiljana’s family from around 1820, when they first settled in Belgrade. Radomir and Ljiljana had a son, Srđan, who is famous as musician.