12 sons expecting number 13

[LadyTevar]

Lo, children are an heritage of the LORD:
and the fruit of the womb is his reward.
As arrows are in the hand of a mighty man;
so are children of the youth.
Happy is the man that hath his quiver full of them:
they shall not be ashamed,
but they shall speak with the enemies in the gate.

NOW... as an archery buff, I think they are getting the context of these verses wrong. I don't think it's about having a lot of children, I think it's about having USEFUL children.

[His Divine Shadow]

Now all they need is for their seventh son to have seven sons.

What is up with that anyway? I know that there is some sort of legend or belief about it but I can't find any references as to just what the hell that is.

The 7th son will be a wizard, and the 7th son of a wizard will be a sourcerer. That's where I recognize it from anyway.

[Crazedwraith]

Now all they need is for their seventh son to have seven sons.

What is up with that anyway? I know that there is some sort of legend or belief about it but I can't find any references as to just what the hell that is.

The 7th son will be a wizard, and the 7th son of a wizard will be a sourcerer. That's where I recognize it from anyway.

If you're talking Discworld, you're misremembering. It's the Eighth son on an Eighth Son will be a wizard and the eighth son of a Wizard will be a source of magic: A Sourcer.

8 having replaced 7 as the magically significant number on the Disc.