[f. as prec. + -ER1, -OR.] One who attests, bears witness, or vouches for.
1598. Florio, Testatrice, a woman witnes, or attester.
1663. J. Spencer, Prodigies (1665), 226. Suspicion of deceit of sight or imagination in the Attestors.
1705. Stanhope, Paraphr., II. 607. Credible Attesters of it to Others.
1836. T. Davies, in Brit. Annual, 322. The mode of attesting an agreement, where the attestor could not write his name.