Obertenghi

Obertenghi
Obertenghi
Marcher noble family
	Coat of arms of the Obertenghi, Marquesses of Milan
Parent family	Bonifaci
Country	Kingdom of Italy
Etymology	Descendant from Oberto I
Place of origin	Probably Pavia or Lombardy
Founded	940
Founder	Adalberto the Margrave
Current head	None; under the Lex Langobardorum, all descendants of its branches hold equal rights to the headship.
Final ruler	Albert Azzo II
Titles	List Count of Genoa ; (940–1097) ; Margrave of Milan ; (940–1097) ; Count palatine of Pavia ; (953–1097) ; Marquis of Este ; (1011–1097) ; Margrave of Ancona ; (1013–1093) ; Prince of San Colombano ; (1011–1097) ; Prince of the Holy Roman Empire ; (1011–1097) ;
Dissolution	1097
Cadet branches	House of Este House of Welf House of Hannover; ; ; House of Cavalcabò; Marquises of Gavi; Lupi of Soragna Meli-Lupi of Soragna; ; Visconti Viscounts of Manesseno House of Spinola; House of De Castro; Malocelli; Embriaco; ; Viscounts of Carmandino; Visconti delle Isole; ; House of Fieschi; House of Confalonieri; House of Lacon-Massa; Marquises of Massa; House of Malaspina; House of Pallavicini;

The House of Obertenghi was an Italian noble family of Longobard origin. The family rose to prominence in the 10th and 11th centuries. It traced its lineage to Viscount Adalbert III, a Frankish noble and the first Margrave of Milan, who established the family's authority in Northern Italy. The dynasty played a foundational role in the creation of the Marca Obertenga, a vast frontier territory of the Holy Roman Empire that encompassed much of present-day Northwest Italy and parts of Switzerland. The Obertenghi were the progenitors of several important dynasties, including the House of Este, the House of Welf, and later the House of Hanover.