 The beautiful and cultured Margaret was popular at the court of France, but her marriage to Louis was not a happy one, in part because of his strained relations with her father-in-law, who was very attached to her.She died childless at the age of 20 in 1445.In 1440, Louis, aged 16, took part in an uprising known as the Praguerie, which sought to neutralize Charles and install Louis as regent of France.