Helen of Anjou (b. unknown, 1237 – d. 1314 Shkodër, Albania). Was the queen consort of the Serbian Kingdom. For political reasons, she marries Serbian King Stefan IV and converts to orthodoxy around 1245-1250. After her husband’s death, she becomes a nun in Gradac monastery in Serbia, where she is buried. She was canonized by the Church and is still a beloved figure in Serbia.
More on Wikipedia.
Address: Trebinje center, Bosnia-Herzegovina