The Nave, or the body of the church, contains numerous memorial tablets, some of considerable historic interest. A significant feature here is the All Saint's Chapel, given by his wife as a memorial to Senator C.V Emerson.

The Royal Coat of Arms, brought to Saint John by the Loyalists. stands over the great West doors and is surmounted by the bust of Queen Victoria, presented in1887 by the St. George Society of Saint John, to mark the Golden Jubilee of her ascension to the throne. The rectors who served Trinity Church over the past two centuries are acknowledged in plaques along the west wall.

The visitor's welcoming center, in the northeast corner, is one of the gifts from Mrs. Frances Emerson, wife of the late Senator Emerson.

The Royal Coat of Arms is the most notable gift of the early years, and one of the few still in existence. This was originally located in the Council Chambers of the old State House in Boston ,but was removed at the evacuation from Boston of the Loyalists. It was under the care of two Harvard graduates, Edward Winslow and Ward Chipman. Winslow had the Coat of Arms sent from Halifax to Judge Chipman, who chose Trinity Church as the home for the refugee arms. It was rescued, with few other items, from the church during the Great Fire of 1877.