Aven Silverstorm was born as the seventh month dies long before the prophecy was made. His parents defied different Dark Lords before and after he was born, he was marked in a battle after being caught up in a crossfire. He was also in possession of (fore)knowledge unlike any other. Aven breaks canon into pieces because why in hell would he sit back and watch as his cousins tear themselves apart in the name of victory just to create the perfect ending? Nahh, not happening. And so Aven picks up his baby cousins, flips off what was supposedly the greatest wizard in the world and the only man Voldemort was scared of, destroys all the horcrux using divination (because hello, magic?), and then saves the world. Because canon can go drown itself in a lake full of inferi, there was no way Aven was allowing his family to break apart. Not under his watch.