Indeed, and he's from the south side. (Not that it's uncommon for south siders to favor the Cubs, but it certainly is amusing.)

https://blockclubchicago.org/2025/05/08/pope-leo-xiv-is-a-cu...

https://abc7chicago.com/post/2025-is-new-pope-cardinal-rober...

My father-in-law grew up a few blocks from Prevost and they’re a Cubs household. The family switched a century ago, after the Sox gambling scandal. Serious business!

Too late to edit but apparently his brother has stated he's a Sox fan, and the Block Club article has been updated accordingly.

I stand corrected. His brother is on the news saying this is fake news and he's a Sox fan.

Oh man, what a trip that must be: "my brother is the Pope"

You just know that about 5000 old white Chicago guys are gonna try this line when they get to the Vatican this summer. God bless 'em.

He also said he rarely spoke to his brother after childhood. So I doubt he is faithfully representing his essentially-long-lost brother's current opinions.