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.

De Croy was first married to Marie Madeleine de Bailleul.^[1]

He remarried in 1643 his distant niece and brother's widow, Marie Claire de Croÿ (1605-1664),^[1] who was the first Duchess of Croy-Havré.^[1] The couple had one son, Ferdinand Francois Joseph de Croÿ-Solre (1644-1694),^[1] who became an Imperial Fieldmarshal, Knight in the Order of the Golden Fleece, and who succeeded to the ducal title.^{[citation needed]}