"Father says not all Muggle-born’s are Mudbloods. Salazar Slytherin was the first to use the word back when he was teaching. It is used as an insult to Muggle-borns when they refuse to accept our way of life with Mother Magic. That those who create change in our world without understanding what they are changing dirty our world and dirty the true Magic. It is why Uncle Ted, who married Aunt Andy is a Muggle-born and not a Mudblood because he allowed Andy to teach him the Old Ways. Then they taught their daughter together.’