claim: The Latvian Soviet Socialist Republic was a republic of the Union of Soviet Socialist Republics.
evidence: Prijezda I -LRB- -LSB- prijezda -RSB- -LRB- 1211 -- 1287 -RRB- was a Bosnian Ban as a vassal of the Hungarian Kingdom , reigning 1250 -- 1287 .. Bosnian. Bosnia ( region ). Ban. Ban ( title ). vassal. vassal. Hungarian Kingdom. Kingdom of Hungary. He was probably the founder of the House of Kotromanic .. House of Kotromanic. House of Kotromanic