Two days ago, we covered the usurpation of 1399 and the events leading up to it. Today, we’re going to examine the issue raised at its end, which dealt with the supposed dynastic crime against nature that the accession of Henry IV rendered. This, of course, links the beginning of the royal House of Lancaster with its end, when Henry IV’s grandson, Henry VI, was deposed in favor of his cousin, Edward IV.
The usurpation of the English throne by Henry IV in 1399 is an issue we’ve touched upon a number of times, but never directly covered. It’s a significant one, for it not only brought about an abrupt end to the House of Plantagenet, but it arguably set into motion the dynastic divide that would later feed into the Wars of the Roses half a century later. The latter question is one that we’ll delve into in a bit more detail later this week, but for the purposes of today I want to cover the events of the actual usurpation, from its causes to its immediate impacts.
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.