Once the squabble over control of Hendrake was finished with, Lord Kiron helped lead the forces of Hendrake into battle against House Thanos. Thanos was, naturally, destroyed by the greater numbers and superior leadership of the Hendrake armies. Lord Kiron distinguished himself in battle and earned the respect of his men.
Haron was granted one half of the Thanos family's holdings. Anza was granted one half of the Mar-vell family's holdings. Assuming the marriage goes through, the combined Haron/Anza family will be one of the more powerful families in Chaos.
Lord Kiron has established his rule over Thanos by promising justice and fair treatment for those who swear loyalty. Those who remain loyal to Thanos are dealt with harshly, however.