autograph (n.)

"a person's signature," 1791, from French autographe, from Late Latin autographum, from Greek autographon, neuter of autographos "written with one's own hand," from autos "self" (see auto-) + graphein "to write" (originally "to scratch;" see -graphy). Used earlier (1640s) to mean "author's own manuscript." As an adjective, "written by oneself," by 1832. Related: Autographic.

autograph (v.)

"to sign one's name," 1837, from autograph (n.). Related: Autographed; autographing. Earlier "to write with one's own hand" (1818).