 On December 16, 1837, the Texas Senate declared the treaty null and void, and encroachment of Cherokee lands continued.On October 5, 1838, Indians massacred members of the Isaac Killough family at their farm northwest of the site of present Jacksonville, leading to the Cherokee War of 1839 and the expulsion of some to Oklahoma.Some went to Monclova, Mexico, and some over into Rusk and Gregg counties (many had relatives among the Choctaw/Chickasaw/Creek community there).