I believe we are searching for the same family. My 4th great grandparents Joseph Webb (1820-Tn) and Lucinda Adkins (1826-Ky), married in Moniteau Co., Missouri on Nov 18, 1847. This family was recorded on the 1850 Moniteau Co., Missouri census with their son James (1848 - Mo). I haven't been able to locate them in 1860 and I'm unsure if they were still in Missouri or not. Lucinda died after 1866 but I haven't been able to determine where. Sometime before 1866 this family went to Arkansas and in 1880 I find Joseph and his children recorded on the Coryell Co., Texas Census, they were in Coryell Co. by 1875.
Joseph and Lucinda's children: James L., Mary M. (1851-Mo), Rebecca Jane (1855-1928), William H. (1859-Mo) and Martha S. (1866-Ar). Rebecca Jane was my ggg grandmother, she married William Calvin Knutson in Pearl, Coryell Co., Texas on September 5, 1875. Any help would be greatly appreciated.