Luna and family

Luna, her husband Rolf Scamander, and their sons Lorcan and Lysander.

I picture they met when Luna was out being an awesome naturalist in the jungles of South America. She thought she was quite alone, and then she looks over to find someone photographing the very animal she was drawing, that kept moving away.

'I've been chasing it to draw it for hours. It's a rare species of-'
'[He finishes her sentence with the name of said animal.] I know. I've been photographing it for hours. You kept getting in the shot.'
'I'm sorry if I ruined your shot.'
'I don't mind. It's not often I get to take pictures of pretty women. It's usually just magical toads.'

He is a nature photographer for the Magical equivalent of National Geographic. They immediately fall in love, and travel the globe taking pictures and studying creatures all over the world.

Lorcan is the black haired blue eyed kid, and Lysander is the blonde brown eyed kid. They get to go on tons of adventures as kids. Lorcan loves climbing mountains the muggle way. Lysander is a lover of music, and can play a variety of ethnic instruments (mostly percussion and guitar-like instruments.)

Btw. Rolf is German, and like all good German photographers, wears socks with sandals. He also has a bit of an accent.