One who, being competent to give evidence, is worthy of belief. Peck v. Chambers, 44 W. Va. 270, 28 S. E. 706; Savage v. Bulger (Kyj 77 S. W. 717: Amory v. Fellowes, 5 Mass. 228; Bacon v. Bacon, 17 Pick. (Mass.) 134; Robinson v. Savage, 124 111. 266, 15 N. E. 850.