With the elimination of the Minwanabi, House Acoma was elevated to the status of Great Family, and Clan Hadama's power grew in direct proportion.
They had a generations-old blood feud with the family of Minwanabi, one of the Five Great Families.
During their course, the Acoma had seized 3 natami of rival houses.
The turning point came when Sezu and his son Lanokota were killed in Midkemia during the Riftwar, which gave the House to the hands of his daughter, Mara. Mara made several breakthrough feats like allying herself with the Grey warriors, the Cho-ja, joining her line with Tecuma's and eventually causing the demise of the Minwanabi, elevating the Acoma to the state of the Five Great Families.
After approximately two years from forming the 'alliance' with the Cho-ja, the Acoma gained much financial power thanks to the silk trade, taking by surprise the factors for the northern guilds and the auctions were the talk of every clan gathering.
During Lord Sezu's rulership, the house strength consisted of 2500 warriors and 500 were dedicated to guarding outlying Acoma holdings in distant cities and provinces. 300 followed Sezu to the Riftwar and perished. At the time of his death the heart of the estate was protected by fewer than 50 men and 37 in the service of Mara.
Following Mara's successes in Dustari, The Acoma became ever more influential. By the time the House was elevated to the status of a Great Family, with the annihillation of the Minwanabi, House Acoma was, without challenge, the most powerful family in Tsurannuani, with approximately 10000 warriors sworn to its service. 
- Daughter of the Empire page 517
- page 155
- page 250