was an Italian nobleman tied with the Obertenghi family and a well-known ancestor of the Houses of Este, Pallavicini and Malaspina.
The Obertenghi family split further with the sons of Albert Azzo II, Margrave of Milan.
Otto IV, Holy Roman Emperor and Ivan VI of Russia were also members.
The Hanoverian branch of the Welfs that ruled in Britain still exists (they lost the crown because Edward VII and all monarchs since are agnatically from the House of Wettin) and all living males descend from Ernest Augustus, Duke of Brunswick (30th generation from Adalberto).
Besides these Hanoverians, Adalberto also has living agnatic descendants among the aforementioned Pallavicini.