From what I can tell, Jon had a kid, Jimmy, with Vera (makes sense, they both wanted what was essentially a normal life and relationship) and Jen had a son, Van, with Magnus (we only see him briefly in one panel but the build and skin tone seems to match Magnus, along with how in a previous 1 page comic we see Vera refer to the Herrons and Herron-Kites, meaning Jen likely did get hitched to Magnus). So we have Jon's son Jimmy and Jen's son Van.