He was born as a younger son of Danylo of Halych, a powerful prince of lands east from Poland and later king of those regions, which was most of the times called Volhynia or Ruthenia (roughly, near modern Belarus and Ukraine). His mother was Anna Mstislavna of Novgorod, daughter of Mstislav the Bold (died before 1252).
In 1252 he was married to Gertrude, Duchess of Austria as her third husband. He, in Western Europe, participated in her attempts to get the power in her duchy, under rivaling claimants. However, already next year they ended up in divorce and Roman returned to Ruthenia where he was 1254-58 Prince of Navahradak.
Marriage and issueEdit
Roman was married twice:
- Gertrude, Duchess of Austria (born c. 1223 - died c. 1288 or died 24 April 1299), married 27 June 1252 (divorced 1253)
- Elena Glebovna of Volkovysk (born after 1288), married c. 1255
He had the following issue:
- Vasilko Romanovich (born c. 1256, died after 1282) [2m.], Prince of Slonim; he may (or may not) have been grandfather of Prince Daniel Ostrogski
- Mikhail Romanovich [parentage uncertain], Prince of Drutsk; his alleged descendants include Princes Drutski, Drutskoy-Sokolinski, Konoplya-Sokolinski, Drutski-Ozeretski, Drutski-Prikhabski, Babichev, Drutski-Lubetski, Drutski-Gorski, and Putyatin.
- Maria Romanovna [1m.], married Joachim, son of Baron Stefan of Zagreb
- Maria, married Prince of Turov Yaroslav Yuriyovych
- Monomakh branch (Volhynia) at Izbornik