Enghien

The Enghien were a noble family of Hainaut, named after their lordship of Enghien in Wallonia. Walter III married Isabella of Brienne, sister of the titular Duke of Athens, Walter VI, who died in 1356; Walter III and Isabella's sons divided his claims.

Sohier, lord of Enghien from 1346, became Count of Brienne and titular Duke of Athens, but was beheaded by Albert of Bavaria in 1364. His brother Walter held Brienne, sacked Geraardsbergen in 1381 and fell in an ambush near Ghent.

Another brother, Guy, took the Greek lordship of Argos and Nauplia in 1356 and in 1370–1371 led a failed invasion of the Catalan Duchy of Athens. His daughter Maria, the last Enghien ruler in Greece, sold Argos and Nauplia to Venice in 1388 and died childless in 1393; the Byzantines seized Argos and the Venetians held Nauplia.