Respectable witness

RESPECTABLE WITNESS. One who is competent to testify in a court of justice. To pass lands in Alabama, a will must be attested by three or more respectable witnesses. See Attesting witness; Competent witness; Credible witness and Witness.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in classic literature ?
Bear all this in mind (it is the sworn testimony of respectable witnesses); and pray do not forget--however foolishly and blamably he may have written about her in the secret pages of his Diary--that he was proved to have done his best to conceal from his wife the aversion which the poor soul inspired in him; and that he was (in the opinion of those who could best judge him) at least a courteous and a considerate husband, if he could be no more.
Nothing else of interest was noted, excepting a suit of moldy and incongruous clothing, several articles of which were afterward identified by respectable witnesses as those in which certain deceased citizens of Deadman's had been buried years before.
Notably, Briant's work is among those that are willing to consider poets as valuable sources of historical commentary and to include such names as Lucan and Claudian alongside Herodotus and Tacitus as respectable witnesses to the immense sweep of Persian and Parthian history.