Yes. He was literally killed by Ragnarok, a sword of Odin with the same name.
http://marvel.wikia.com/wiki/Cul_Borson_(Earth-616)
He's a more recent Thor character. I thought he was made in 2009 or something, but it was 2011.
Also just because there was no previous mention of kids doesn't mean their couldn't have been.
However, this wasn't the first time Hela wasn't made Loki's daughter. In the Ultimate Universe, their relationship was erased and she also had a kid with Thor named Modi.
http://marvel.wikia.com/wiki/Modi_Thorson_(Earth-1610)
Edited by firewriter on Aug 31st 2018 at 1:48:39 AM
Amora would be a good character for a Valkyrie movie
Not necessarily as a villain but at least somewhat antagonistic
Provided she's not used like Lorelei was in Agents of Shield
Forever liveblogging the Avengers
Cul Borson is that same guy. He's called "The Serpent" as well.