Allograph

[ælәugrɑ:f]

(noun.) a signature written by one person for another.

(noun.) a variant form of a grapheme, as `m' or `M' or a handwritten version of that grapheme.

Typist: Stanley--From WordNet

(n.) A writing or signature made by some person other than any of the parties thereto; -- opposed to autograph.

Checker: Virgil

n. a writing made by one person on behalf of another.

Editor: Louise