WhatYou're - It seems as though you've already been explained the situation. On the off-chance that you'd like to attempt to contact your father, with no guarantees that it will work, I've been trying something for my mother, who is related to you as well.
My name is Draco Malfoy, and I'm Sirius' second cousin, to make our shared, convoluted family tree as efficient as possible. I never thought I'd be - You were sorted into Slytherin, I presume?