Dolores Umbridge's brother

Mr Umbridge was a Squib, son of wizard Orford Umbridge and Muggle Ellen Cracknell. He had an older sister named Dolores. When Dolores was fifteen years old, his parents separated and he would return to the Muggle world with his mother, while his sister would stay with his father in the wizarding world and would never speak of him again.

Appearances

 * Pottermore