USFamilyTree.com provides tools to efficiently assemble same-surname descendant branches. A collection containing all branches of families that lived in the 1800s is what we call a Surname Index. We have researched and published over 70 Surname Indexes, each containing hundreds to thousands of individuals.
A single surname descendant branch takes a man that was born in the early 1800s in the United States and gathers all of his descendants that keep his last name.
For example, start with a man named Albion A Barstow as found in the 1850 U.S. Census. By tracing his family through each census, you can quickly assemble his family including his descendants. USFamilyTree.com software makes it easy to stitch these families together.
Feel free to browse our collection of Surname Indexes.
We've used the Advanced Tree Inspector tools, among other things (like Ancestry's censuses) to create family indexes on a bunch of US surnames. These indexes are like a skeleton, or basic outline, of the entire surname group.
You can use them however you want, but the most effective use would be to complete the descendancy group by filling in all the remaining data, individuals, and family relationships to create a complete descendants group then submit them to new FamilySearch, OneGreatFamily, Geni, or another world tree for everyone to enjoy, or create and host your own online family tree software.