‌William III 5th Baron de and Maud de were married in a religious ceremony about 1162.  They had seventeen sons and nine daughters, named Robert De, Roger, Giles De, William Lord Of Bramber De, Thomas De, William, Hugh De, Walter De, Giles, Henry De, Reginald, Reginald de, Bernard De, Knill John, Fulk De, Philip De, John De, Flandrina, Matilda De, Joan (Alice)De, Maud, Laurette, Laurette De, Margaret, Margaret and Eleanor De.