U.S. Supreme Court
Vigel v. Hopp, 104 U.S. 441 (1881)
Vigel v. Hopp
104 U.S. 441
Where the answer is responsive to the allegations of the complainant's bill, they must, to entitle him to relief, be sustained by the testimony of two witnesses, or of one witness corroborated by circumstances which are equivalent in weight to the testimony of another witness.
The facts are sufficiently stated in the opinion of the Court.