Philippe François de Croy, Vicomte de Langle, Seigneur de Tourcoing (1609–1650), was by marriage Duke of Havré. He was Governor of Luxembourg, and became a Knight of the Order of the Golden Fleece in 1646.
He was first married to Marie Madeleine de Bailleul. He remarried in 1643 his distant niece and brother's widow Marie Claire de Croÿ (1605-1664), who was the first Duchess of Croy-Havré.
They had one son, Ferdinand Francois Joseph de Croÿ-Solre (1644-1694), who became an Imperial Fieldmarshal, Knight in the Order of the Golden Fleece, and who succeeded to the ducal title.