Married superheroes are a rarity. There are a lot of reasons for this: not wanting to age the characters, not wanting to settle love triangles, writers/editors who find married couples boring.
It’s why I tend to be more interested in married relationships in comics. They are so incredibly rare that they immediately draw attention to themselves.
And a married superhero with kids? Good luck finding one outside of a What If? or Elseworlds story. (Mr. Fantastic and the Invisible Woman being the most notable exception.)
Another notable exception – up until last year – was Linda Park and Wally West (the Flash). Their relationship was a nice demonstration of character development for Wally, who had a lot of flings as a teenager and a young adult. Wally went from a girl-crazy youth to a loving husband and father.