one of the four reasons specified in the statute (see note 6 supra). Id. at 92, 195 S.E. at 526. 121d. at 93, 195 SE. at 527. 13 Callis v. Waddy, 16 Va. (2 Munf.) 511 (1810. 14 See generally Woodson v. Commonwealth Util., Inc., 209 Va. 72, 161 SE.2d 669 (1968) (a decree declaring a confessed judgeme