Census data indicates he was born in KY abt 1833-1835. Mary is a widow in 1910 but I didn't find a TX death record for him online. There are several records on their children that can be found using the free search tool at: https://familysearch.org/
U S Census, 1860 young, Texas page 8
Lewis F Roberts
Age 25 years
Birth (Est): 1835 Birthplace: KY
U SCensus, 1870 Precinct 4, Parker, TX
Citing this Record "United States Census, 1870," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MXG4-4CK
L F Roberts M 37y KY Farmer
Malenia Roberts F 23y MO
Amanda E Roberts F 9y TX
John S Roberts M 6y TX
Laura A Roberts F 3y TX
Nannie Roberts F 7m TX
United States Census, 1880 Precinct 1, Young, TX
Citing this Record "United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MFJL-J6W
Self Lewis F. Roberts M 46 Ky Farm labor abt 1834
Wife Mary M. Roberts F 34 MO
Dau Amanda E. Roberts F 18 TX
Son John S. Roberts M 15 TX
Dau Lawra A. Roberts F 13 TX
Dau Nannie L. Roberts F 11 TX
Dau Martha A Roberts F 6 TX
Son Robert W. Roberts M 4 TX
Dau Sarah L. Roberts F 1 TX
U S Census, 1910 Justice Precinct 8, Brown, TX
Citing this Record "United States Census, 1910," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M296-KC8
SELF Mary Roberts F 64y M O widow
DAU Nannie Roberts F 40y TX
DAU Ellen Roberts F 29y TX
SON Lee Roberts M 19y TX
SON Marvin Roberts M 4y TX
