Coat of arms of the U.S. bishop Robert Joseph Cunningham, Bishop of Syracuse.
Blazon: Arms impaled. Dexter: Azure, a Latin cross throughout Or, the lower shaft entwined with a dolphin, head to base, and in chief dexter a crescent Argent. Sinister: Gules, upon a chevron Argent three stars Sable; a fleur-de-lis of the second above two oak leaves and in base a Paschal lamb standing Proper.
Motto: “ECCLESIA MATER NOSTRA”.
Reference:

syracusediocese.org
Own work
SajoR