09e4cafc_tions___Crusader_Kings_II_Wiki__Requirement
[Ambition] Have a Son [Success Condition] Has a son [Success Effect] Gain 10.00 Piety [Requirement] 
Over 16 years old Not a prisoner Married Not female No sons No more than 2 children Younger than 75 Not celibate Not incapable
Ambitions - Crusader Kings II Wiki
Requirement