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.