English
Townson
Altered form by folk etymology of Thomas + -son.
Formed from Thomas + -son
The story
Altered form by folk etymology of Thomas + -son.folk etymology The source marks this as unproven or a folk etymology. Quoted, not asserted.
Today it means
name A surname originating as a patronymic.
Language periods are conventional ranges, not dates for this word.
Etymograph / Townson