Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
WRITER
As described in historical dictionaries
Patronymica Britannica (1860)
S.M ALL WRITER. Apparently a translation of the old name Petyclerk. See Clark. The H.R. forms are Smalwriter and Smalwyritere.