Marie de Bourbon

Marie de Bourbon (c. 1315–1387) was a daughter of Louis I, Duke of Bourbon and Mary of Avesnes. In 1329 she reached Cyprus to marry Guy of Lusignan, titular Prince of Galilee; they wed in 1330 and their son Hugh was born around 1335.

Left a widow in 1343, she was forbidden by her father-in-law to leave Cyprus until 1346. In 1347 she married Robert of Taranto, Prince of Achaea and titular Latin Emperor. When Robert died childless in 1364 she refused to accept his brother Philip II as heir.

Holding sixteen castles in Achaea, she kept the title of princess and put forward Hugh, who invaded the Peloponnese in 1366 with 12,000 mercenaries. The war ended in 1370, when she sold her rights to Philip for 6,000 gold pieces and kept only Kalamata. She named her nephew Louis II of Bourbon her heir.