1534, a kind of document in Scottish law, from M.Fr. signature
(16c.), from M.L. signatura
"sign," in classical L. "the matrix of a seal," from signatus
, pp. of signare
"to mark, sign" (see sign
). Meaning "one's own name written in one's own hand" is from 1580, replacing sign-manual
(1428) in this sense.