This is a representation of the coat of arms of the Roman Catholic Archdiocese of Newark.Blazon: Barry wavy of six Argent and Azure on a chief Gules between two shamrock leaves slipped a crescent Argent.
The following Commons images were used to create this image:

 File:Roman Catholic Diocese of Erie.svg by Niagara (talk · contribs) (mitre)
 File:Old French Escutcheon.svg by Masur (talk · contribs)
 File:Shamrock of Ireland (Heraldry).svg by Sodacan (talk · contribs)
 File:Croissant Héraldique.svg by Odejea (talk · contribs)
Own work
Alekjds