Conflict, size, parliament, and monarch data for Barcelona, Florence, Gwynedd, Hanover, Majorca, and Milan. 

A catalogue of all brothers for monarchs of 32 European polities.

The natural and abrupt deaths of 82 monarch from accidents and medical events.

Data on 106 depositions, civil wars, and international wars between monarchs and their brothers.

Collects major positions for 1077 royal brothers (counts, dukes, bishops, cardinals, and sovereigns).