An election to the Carmarthen Rural District Council was held in April 1910.
The successful candidates were also elected to the Carmarthen Board of Guardians.
Thomas stood down having recently been elected to Carmarthenshire County Council.
David Farr Davies, whom he defeated in that contest was elected unopposed after two candidates, including the other sitting member, William Brazell, withdrew.
In addition six members were elected to represent the borough of Carmarthen.