Adair served the
Cherokee Nation in many capacities. He was a senator, a justice of the Cherokee Supreme Court, delegate to
Washington, DC, and assistant principal chief. and Senator from the Saline District from 1869 to 1874. In 1879, he was elected as Assistant Chief. He was a vocal advocate for the rights of the Texas Cherokees. He served as Chairman of the Texas Cherokees and Affiliated (later Associate) Bands from 1871 until his death in 1880. During this period in 1873, he and Clement Neely Vann co-authored the book,
History of the Claim of the Texas Cherokees, which they wrote on behalf of "the Texas Cherokees and Affiliated Bands." The Texas Cherokees and Associate Bands was established by Adair and John Adair Bell in the early 1850s in the
Mount Tabor Indian Community in
Rusk County, Texas for the purposes of seeking redress over the violations of the 1836 Treaty of Bowles Village which later led to the Cherokee-Texas war in 1839 as well as later actions by Texas Cherokee leader Chicken Trotter until the
Treaty of Birds Fort in 1843 that ended hostilities. The Texas Cherokee continued to seek compensation from the state of Texas for lands taken from them in 1839. Adair along with other Confederate Cherokees went to Washington in order to petition Congress to allow him to sue the state to return lands in Texas once belonging to Texas Cherokee people. Initially this was to allow Southern Cherokees to relocate back on treaty lands due to the hostilities of Cherokee factions after the war. Some of these issues went back to the Ross-Ridge party feuds stemming from the Trail of Tears that had been played out during the Civil War. The main point for the suit was that in 1839, while the
Republic of Texas was independent, President
Mirabeau Lamar had forcibly driven most of the Texas Cherokee into
Indian Territory and seized their lands in East Texas. The Texas Cherokees and Associate Bands sought the return of in East Texas. In the 1850s the state had offered lands in the
Texas Panhandle in exchange, but Adair refused to accept that offer. No such offer was made to settle after that. However the Texas Cherokees and Associate Bands continued to pursue litigation as late as 1963 some eighty-three years after Adair's death. ==Death and legacy==