Too married, possibly. Too old, hardly. If one believes the rags, age enhances wizards. Word Has It ran a feature in August about Wizards who've aged like fine wine. (Seriously.) And you're not old enough to have made that list.

Mind you, they included Gus Rookwood and left Toshenka off. I think the author might have been afraid he'd object. (Which shows what magazine writers know.)

As for Razzer and sprogs. Could be the other way around: the sustained lack of bastards gave him license to be careless. Either way. You're right: he could have fathered a school-full of bastards.

If he had, though, at least one would have pursued him for recognition, surely.

Still, there's always the chance.