The term 'Italian Princely Family Name' can be summarized by two crossword solutions: ESTE (4 letters) and ORSINI (6 letters). ESTE is a princely family of Italian nobility that originated in the 11th century in the region of Lombardy. The family has held prominent positions in the politics and culture of the region for centuries, and is still active today. ORSINI is another princely family of Italian nobility, originating in the 12th century in the region of Lazio. This family has also held important positions in the politics and culture of Italy, and is still active today.