In 1923, William-Powlett married Helen Constance Crombie; they had three daughters. Following the death of his first wife he married Barbara Patience William-Powlett, widow of his brother, in 1966. married Henry Bruce of Salloch, and was the mother of the royal commentator
Alastair Bruce of Crionaich. His third daughter, Judith, married
Sir Michael Colman, 3rd Baronet. ==References==