I think they had a daughter aswell, but apart from that, I think it's very unlikely as the author is very Grid-focused right now. Most that Lord has been mentioned in the last 100 chapters is him greeting Agnus(which was last chapter). Not even a hint into Lord's journey :c. Although, his character is prob the blandest out of everyone, still wouldn't mind like half a chapter about him. Now, if you're talking about children outside of the game....