Robin goes out for a watch when she finds her captain lost in the past

What would have happened if in the wizarding world their were magically binding alliances between different families one of the stipulations is that they raise their kin if their unable too so Harry is taken from the Dursleys to be raised by four families Greengrass, Moons, Lovegood, and the Longbottoms how does this change Harry's destiny

(Nevilles the Boy Who Lived) Harry lives with his younger sister Iris at the Dursleys there life is pretty terrible until they make a business deal with there Uncle Vernon for a better life things slowly improve until they find out that there a witch and wizard respectively and they slowly find out that the new world there introduced too isn't as much of a paradise as it appears.

Harry Potter and Luna Lovegood battle the basilisk and Tom Riddle