She was born in 1779 in
Llanllechid,
Caernarfonshire, Wales; her father was William Llwyd. She wrote hymns in the
flyleaves (blank pages) of her
Bible and other books. The hymn
Dyma Feibil annwyl Iesu (
This is Jesus’ Precious Bible) has been attributed to her given that it was written in her handwriting in one of her books, but the attribution is uncertain because Thomas sometimes copied down hymns from other sources. Thomas "was masterful in her manner" and often helped visiting preachers to learn social graces and manners. ==References==