What is Attesting Witness?

Legal Definition
One who, upon being required by the parties to an instrument, signs his name to it to prove it, and for the purpose of identification.

2. The witness must be desired by the parties to attest it, for unless this be done, he will not be an attesting witness, although he may have seen the parties execute it. 3 Campb. 232. See Competent witness; Credible witness; Disinterested witness; Respectable witness; Subscribing witness; and Witness; Witness instrumentary; 5 Watts, 399; 3 Bin. 194.
-- Bouviers Law Dictionary
Legal Definition
One who signs his name to an instrument, at the request of the party or parties, for the purpose of proving and identifying it. Skinner v. Bible Soc., 92 Wis. 209, 65 N. W. 1037.
-- Black's Law Dictionary
Legal Definition
One signing a paper as a witness of another’s signature. See 115 Mass. 599.
-- Ballentine's Law Dictionary