Mentioned in the colophone (170b) of the festal Menaion, which has been preserved in the Chludov collection of the manuscripts at the State Historical Museum in Moscow under the signature 164. The manuscript was written between the years 1371 and 1394. She was the daughter of Radoslabos Chlapenos and Eirene Prelumpissa. She was married to King Markos. The marriage to Đurađ I Balšić is preserved in the later work of Mauro Orbini. Markos divorced her and then lived with Thodora, who was the daughter or wife of a certain Grьgurь, probably Grьgurь Branković. After the romance with Thodora ended, Markos gave Thodora to Radoslabos Chlapenos and remarried Jelena according to dijak Dobre, who wrote about it in a note in the festal Menaion (Pysa se sija knyga u Porěči, u selě zovom Kalugerecь vь dьni blagověrnago kralja Mar’ka, jegda ōdade Thodoru Grьgurovu ženu Hlapenu, a uze ženu svoju prьvověn’čan’nu Jelenu, Hlapenovu dьštere). Markos divorced her again because of her bad behaviour according to Mauro Orbini. She then resided in town of Kastoria. Đurađ I Balšić, who wanted to seize Kastoria, persuaded Jelena into marriage. After Đurađ I Balšić divorced his first wife, Jelena ceded the town of Kastoria to him and became his wife.