Sylvanus CASTLEMAN born ca. 1777 married Elizabeth LUCAS in Davidson County Tennessee on August 19, 1803. By March of 1822 he was in St. Genevieve, Missouri and apparently was acquainted with Stephen F. AUSTIN'S family.

Sylvanus first settled in the vicinity of Columbus on Cummings Creek. He was a member of Stephen F. Austin's "Old Three Hundred". He was listed as an inhabitant of San Felipe de Austin from 1823-1827. His home must have been in a central point in the colony for there are letters written by different officials that use the address "Colorado River House of Mr. Castlemans".

CASTLEMAN received title to two sitios of land in present Wharton County, one half sitio in present Fayette County and two labors in present Austin County on July 7th, 1824. The reason Sylvanus was treated so generously is not known, but his large family may have been a deciding factor.

On March 4, 1823, a list of American settlers on the Colorado district was made of all the residents by Austin. Among the settlers were Sylvanus CASTLEMAN. He is listed as being 46 years old, a farmer with cattle and hogs. Listed as his family members are: Elizabeth Castleman 37, Nancy Castleman 19, Andrew Castleman 18, Sarah Castleman 17, Elizabeth Castleman 13, Lavina Castleman 11, Benjamin Castleman 7 and Jacob Castleman 2.

Elizabeth CASTLEMAN, daughter of Sylvanus and Elizabeth CASTLEMAN, was born ca. 1810 married John CHESNEY on May 14, 1830.