Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
commendātor, ōris, m. [commendo], one who commends, a commender (in post-Aug. prose; cf., however, commendatrix): fautor et commendator, Plin. Ep. 6, 23, 4; Vop. Prob. 2; Symm. Ep. 1, 40 al.