Eligibility
Under the constitution of Monaco, the crown passes according to male-preferance cognatic primogeniture. Only descendants of the reigning monarch and the reigning monarch's siblings and their descendants, whose parents have been married at some point with the monarch's approval and who are Monegasque citizens, are eligible. Children born as a result of adultery are permanently excluded. A person can be deprived of succession rights if he or she marries without the monarch's permission, along with descendants of the unapproved marriage, but can be restored into the line of succession if the marriage produces no issue and ends before the demise of the crown.
Should nobody eligible to succeed according to the succession laws, a council of regency takes power until the Crown Council elects a new monarch from among the more distant descendants of the House of Grimaldi.
Read more about this topic: Line Of Succession To The Monegasque Throne