Coat of arms of the U.S. bishop Robert Nugent Lynch, Bishop of Saint Petersburg. 
Blazon: Arms impaled. Dexter: Quarterly, Gules and Or, a reversed Latin cross throughout; within the quarters: I, a castle tower; II, a lion rampant; III, an Indian arrowhead; IV, a halberd, all counterchanged. Sinister: Or a trefoil Azure; issuant from a base barry wavy of four Argent and of the second, three hills also of the second; in dexter chief a hurt charged a cross of the field. 
Motto: “Pro Amicis suis”.
Reference:

catholicweb.com, PDF
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