Duchy of Sora

• Ruling Houses
• 

  House of Cantelmo
  1443–1472

• 

  House of della Rovere
  1472–1516

• 

  House of Croÿ
  William de Croÿ
  1516

• 

  House of della Rovere
  1516-1538

• 

  House of Boncompagni
  1579–1707

• 

  House of Boncompagni Ludovisi
  1707–1801