In 1859, Thomas married Ann Morris at Llanfihangel Genau'r Glyn and together had 1 daughter, Mary, who grew up to marry Thomas  Cribb Jr., the son of Thomas Bridson Cribb, the then Treasurer of Queensland.
He had a great love of music, and for many years sponsored the annual Queensland Eisteddfodau, to which he gave between £60 to £100 to the chief choral contest.
He was also patron of the Blackstone-Ipswich Cambria Choir and was often seen at the festivals in which they competed.

Thomas was a trustee of the Ipswich Girls' Grammar School and also donated the annual 'Thomas Lewis Scholatship' to the boys Grammar School.
Around 1905, Lewis was on a tour back to Wales, and while there he donated £1000 to establish a scholarship at the Aberystwyth University.

In 1890, Thomas built 'Brynhyfryd Mansion' at Blackstone.
It was an elaborate home, three stories high and containing 49 rooms including a basement and a tower.
It was built on top of a rich coal seam, and while Thomas was alive, refused to mine the coal as it would mean having to demolish his home.
After his death his wife, daughter, and her husband continued to live there and it was eventually sold in 1934 to Rylance Collieries and Brickworks who demolished the mansion in 1937 to mine the coal deposits below.

Thomas died in February 1913, and his funeral proceeded from his home in Blackstone to the Ipswich General Cemetery.
In 1859, Thomas married Ann Morris at Llanfihangel Genau'r Glyn and together had 1 daughter, Mary, who grew up to marry Thomas  Cribb Jr., the son of Thomas Bridson Cribb, the then Treasurer of Queensland. He had a great love of music, and for many years sponsored the annual Queensland Eisteddfodau, to which he gave between £60 to £100 to the chief choral contest. He was also patron of the Blackstone-Ipswich Cambria Choir and was often seen at the festivals in which they competed. 
Thomas was a trustee of the Ipswich Girls' Grammar School and also donated the annual 'Thomas Lewis Scholatship' to the boys Grammar School. Around 1905, Lewis was on a tour back to Wales, and while there he donated £1000 to establish a scholarship at the Aberystwyth University.
In 1890, Thomas built 'Brynhyfryd Mansion' at Blackstone. It was an elaborate home, three stories high and containing 49 rooms including a basement and a tower. It was built on top of a rich coal seam, and while Thomas was alive, refused to mine the coal as it would mean having to demolish his home. After his death his wife, daughter, and her husband continued to live there and it was eventually sold in 1934 to Rylance Collieries and Brickworks who demolished the mansion in 1937 to mine the coal deposits below.
Thomas died in February 1913, and his funeral proceeded from his home in Blackstone to the Ipswich General Cemetery.
Lewis Thomas (politician)