Simon most likely do not have any offspring. This is my fault. I did castrate him. Even castrated, he did spray his turf. Even castrated, he did attract female cats to come visit him. But I think that was as much as he could overcome. Making children was most likely out of the question even for this giant amongst cats. His right to offspring was never in my mind when I got him. I castrated him to stop him fighting my other cat Zorro. But knowing how fantastic Simon turned out to be, I wish there was a lot more Simons in the world. Nothing about his right to offspring was in my mind at that time.