Johanna van Polanen

Johanna van Polanen
Polanen coat of arms
Spouse(s)	Engelbert I of Nassau
Noble family	House of Polanen
Father	John III, Lord of Polanen
Mother	Odilia of Salm
Born	(1392-01-10)10 January 1392
Died	15 May 1445(1445-05-15) (aged 53) Breda
Buried	Mausoleum of Engelbert I of Nassau in Breda

Johanna van Polanen (also spelled as Jehenne; 10 January 1392 – 15 May 1445 in Breda) was a Dutch noblewoman. She was the daughter of John III of Polanen, Lord of Breda, and his wife, Odilia of Salm.

Johanna married on 1 August 1403, at the age of 11, in Breda with Engelbert I of Nassau, who became Lord of Breda jure uxoris. Johanna and Engelbert resided in Breda; they also owned houses in Brussels and Mechelen. They had six children:

Johanna inherited many Lordship, Heerlijkheden and manors in Holland, Brabant, Hainaut, Utrecht, Zeeland. She also inherited the western part of Krimpenerwaard, including the villages of Krimpen aan de Lek, Krimpen aan den IJssel, Lekkerkerk en Ouderkerk aan den IJssel. Most of these possessions had been acquired by William of Duivenvoorde. Through her inheritance, the House of Nassau became one of the wealthiest and most influential noble families in the Burgundian Netherlands.

Johanna died in 1445. She was buried in the mausoleum constructed for her husband in the Church of Our Lady at the Market Square in Breda.