"Internet nexus of cultural Judaism" — Examiner.com
Is Dunford really I3? His great-grandfather Aaron Block was Jewish, as was probably his maternal grandmother Ruth Abraham, but is there any indication that it goes further than that? https://www.the-star.co.ke/sports/2020-04-02-swimmer-dunford-finding-his-feet-in-the-music-industry/
So he's probably only a quarter, but that quarter is the maternal grandmother...
Fair enough :-)