John Foster, one of Stephen F. Austin's Old Three Hundred colonists, moved to Texas from Mississippi in 1822. He was the father of two sons, John R. and Randolph Foster. On July 15, 1824, he received title to 2½ sitios and three labors in present Fort Bend County. In April 1826 John Foster or possibly John R. Foster, his son, carried a message from Stephen F. Austin to the Cherokee Indians. In November of that same year he was commissioned to buy a steel mill in New Orleans for William Cooper. William B. Travis had Foster's power of attorney in January 1834. Foster died in Woodville, Mississippi, in January 1837, and his property passed to his heirs. Randolph Foster was living on the original headright at the time of his father's death.
In February 1830 another John Foster moved to the Austin colony from Carolina.
John R. Foster, probably the son of the Old Three Hundred settler, fought with the Texas army during the siege of Bexar. He appears to have been part of Travis's cavalry detachment that captured a herd of Mexican horses outside of San Antonio. In mid-November 1835 Travis dispatched the captured herd to Gonzales under the charge of John R. Foster. In 1837 this Foster petitioned for the organization of Fort Bend County.