sublineage means A subordinate part of a lineage. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From sub- + lineage.
noun
- A subordinate part of a lineage“At that time, before sublineation had become significant for the local group, banishment would have amounted to dismissing a troublesome individual and his wife and children, rather than an entire sublineage consisting of several families ...”