I see the following from William Benjamin Martin’s WW1 military records:
Wife: Kate Sandford, married at New Wesleyan Chapel, Bedminster, 13/1/17.
Children:
Violet May - May 5, 1903 Bristol
Edward Thomas - Dec 29, 1904 Bristol
Lily Beatrice - Mar 19, 1910 Bristol
Beatrice Seward (adopted) - Dec 16, 1903 Stapleton