On the night of 21 February 1950, Lucretia and Ignatius Prewett had a son. Born to a Gryffindor and a Slytherin, to a a Prewett and a Black…a Ravenclaw at Hogwarts, married to a pure-blood Hufflepuff; William and Edith Prewett are among the first, along with Gideon and Fabian, to join the Order of the Phoenix. AU, rated T for Death Eaters, duelling etc.