Lewis & Short

con-grātŭlor, ātus, āri, v. dep., to wish joy, to congratulate (very rare; not in Cic.); absol.: dona quid cessant mihi Conferre omnes congratulantes, qui pugnavi fortiter, Plaut. Men. 1, 2, 21 Brix; Gell. 12, 1, 4; Vulg. 2 Reg. 8, 10.
With dat. pers., Vulg. Ruth, 4, 17; cf. Porc. Latro, Decl. in Catil. 36.
Alicui de aliquā re, Vulg. Tob. 11, 20.
With acc. and inf., Liv. 3, 54, 7.