When Albus Dumbledore send the order of phoenix off to a mission along with kids. The mission was to find a woman who knows a lot about the Death-eater considering she is use to marry one. 

Sirius find a 2 new addition to the Black Family tree. One of the names was burnt along with her picture. The two picture was connected to Regulus Black. 

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I don't own any harry potter characters. I only own Alina Jewels.