The Aleramici were a noble family that emerged in the 10th century in northern Italy. They played a significant role in the political landscape of the region, particularly in the areas of Piedmont and Liguria. The family is known for its influence over various territories and for founding several important dynasties, including the Marquesses of Montferrat. The Aleramici's legacy includes the establishment of numerous castles and fortifications, which served as both residences and military strongholds. Their lineage contributed to the development of local governance and feudal systems, impacting the social structure of medieval Italy. The family's prominence gradually declined by the 14th century.