#Blackhawks defenseman Brent Seabrook has indeed named his newborn Carter Seven Seabrook. Probably good Seabrook's jersey number isn't Zero.— Chris Kuc (@ChrisKuc) August 19, 2013
So either the Seabrooks named their son's middle name after Seabrook's sweater number or they are really big fans of Seinfeld. Or both, I suppose it could be both. It is indeed a beautiful name.
Here's a photo of Seabrook and Carter on Facebook. Congrats to the new parents.