In the usurpation of Richard II’s throne in 1399 and the establishment of the House of Lancaster, much credit is given to Henry IV (obviously) and his father, John of Gaunt. But it’s worth recognizing that without the wealth and inheritance of Blanche of Lancaster, neither would have been as well-positioned to challenge their Plantagenet cousins.
Blanche was born in March 1347 to Henry of Grosmont, Duke of Lancaster and Isabel de Beaumont. She was the youngest of two daughters, her elder sister, Maud, having been born in 1339. Given the gap between the two girls’ birth and the lack of subsequent children, including a male heir, it’s clear that the couple suffered from fertility issues, a situation that led to their daughters growing up to be extremely desirable heiresses on the English marriage market.
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