Three of their sons gave birth to the Sforza - Cesarini lines : the firstborn of the princes of Santa Flora and Genzano and the counts of Celano .
Santa Flora and Genzano is the dukes of Segni .
Three of their sons gave birth to the Sforza - Cesarini lines : the firstborn of the princes of Santa Flora and Genzano , the dukes of Segni , and the counts of Celano .