Gale - The other thing I forgot to ramble about Gale was he played beater his 4th - 6th year. So 1990-1993 they would have played on the same team if they overlapped any. He didn't take up his position in his seventh year to focus on NEWTS. Because... there were bigger fish catch than playing pro sports. Plus... he wasn't that good. haha. But yes - I could see him liking Miles well enough to keep friendly terms with him. And if the daddy thing were "unspoken" knowledge amongst "high society" types Gale would probably know it through the grapevine. Which he'd figure the kid just needed guidance of some sort. The Rosier's Gale grew up with were totally PRO ministry (regardless of who was in charge) and distanced themselves from open DE activity as much as possible. The way they see it ... money is money.... whether its pureblooded or muggle. Gale's running plot line is he's the guy that convinced Percy Weasley to turn against his Vigilante family in their youth and be pro-ministry! So, that's a thing that might be fun to play with in some way. maybe?
Alicia - Down for this.
Seamus - It would HIGHLY amuse me if they were related through marriage if only so Seamus could/would roll his eyes whenever they attended Quigley family gatherings together. He'd likely make a point to remind everyone present "we're only related through marriage... mmmkay?"
Ella - I'm honestly down for whatever. And it's totally fine if you don't go with an Ella connection. I'm just offering all the thiiings! lol