Peter Ribnikar was born July 30, 1925 in Retnje. In 1951 he graduated from history and geography at Faculty of Letters in Ljubljana. He got his post at the State Archives of the Republic of Slovenia (ARS) and worked there untill he was pensioned in 1988 (as councilor and Deputy Director). He authored several works on the archive sciences, and published many archival sources (including Slovenian Bondsmen-oaths at Patrimomai Court of Bled, Lj. 1976), as well as historic treatises based on the archive materials of the ARS and recently also of the arhives in Prague.