About duchess Louise de la Valliere; she had an affair with Louis XIV and had to live in hostile conditions in French court. She bore several children to Louis XIV, one of which was legitimised by royal decree. The mistress lost favour in the Royal Courts, and Louis XIV found a new mistress. He used Louise to conceal the new affair; Louise began to lose her beauty and miscarried her final pregnancy in 1671. In 1674, she joined the Order of the Brothers of the Blessed Virgin Mary of Mount Carmel - became Sister Louise of Mercy; a nun.