Poule d'Essai des Poulains
Kingsley Macomber purchased Haras du Quesnay breeding farm in Lower Normandy from William Kissam Vanderbilt and for the 1925 breeding season Parth was retired to stand at stud. As a sire, he met with limited success but did produce Davout, a winner of the 1936 Poule d'Essai des Poulains.