Webregulus & sirius have triplets auggie & snow & rhea, while regulus & jamie have harry.
The safe house is attacked, regulus & jamie vanish, and are assumed dead.
They show up 10 years later, having accidentally time travelled, & teach at hogwarts along with charlie who is a newly infected werewolf.
Webhere you can find all sorts of stories with sirius and harry as the main charactersfocus.
Love stories, gen stories, fatherson stories, anything great and good with these two characters is featured.
Webancient family magic was used to create a bond between sirius black and his godson harry potter.
When harry's pain and fear break through the magic surrounding azkaban sirius knows what he must do to help his young godson.
Child harry fic at beginning, father/son relationship.
Webit’s the first christmas harry and sirius spend together.
Harry’s acting distant and quiet and sirius begins to doubt that harry really wants to live with him.
Set after prisoner of azkaban.
Websirius black is lord black.
Book two of the heritage series:
Seeking new allies abroad, lord black creates the triwizard exchange and harry leads a team of students to beauxbatons and durmstrang.
Webcollection of most perfect sirius harry stories i've found.
Mostly aus of sirius rescuing/raising harry.