Question: Holy Trinity Cathedral is part of the diocese that is a member church of what larger body?

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Holy Trinity Cathedral, Port-au-Prince: The Holy Trinity Cathedral, Port-au-Prince (French: "Cathédrale Sainte Trinité" ) is the main cathedral in the Episcopal Diocese of Haiti.  The present Holy Trinity Cathedral is in downtown Port-au-Prince at the corner of Ave. Mgr.  Guilloux & Rue Pavée.  Holy Trinity Cathedral has been destroyed six times, including in the devastating earthquake on January 12, 2010.

Anglican Diocese of Accra: The Anglican Diocese of Accra is a diocese of the Church of the Province of West Africa, a member church of the Anglican Communion.  It was founded in 1909 by the Archbishop of Canterbury.  The cathedral of the diocese is Holy Trinity Cathedral in Accra, Ghana.

St Mary's Cathedral Church: St Mary's Cathedral Church, also known as St Mary's Church, is the former Cathedral Church of the Anglican Diocese of Auckland.  Located in Parnell, it replaced the earlier Old St Mary's.  This wooden Gothic Revival church was designed by the prominent Christchurch architect Benjamin Mountfort and completed in 1897.  The building served as the Cathedral Church and principal Anglican church of Auckland until 1973 when the Chancel of Holy Trinity Cathedral, for which the foundation stone was laid in 1957, came into use.  In 1982, St Mary's Church was moved across Parnell Road to its present site beside the Cathedral.

Diocese of Polynesia: The Diocese of Polynesia, or the Tikanga Pasefika, headed by Archbishop Winston Halapua, serves Anglicans in Fiji, Tonga, Samoa and the Cook Islands, within the Anglican Church in Aotearoa, New Zealand and Polynesia.  The diocese's first bishop was consecrated in 1908.  The diocese's cathedral is Holy Trinity Cathedral in Suva, Fiji.

Holy Trinity Cathedral (Accra): The Holy Trinity Cathedral is an Anglican church in Accra, Ghana.  Completed in 1894, it is part of the Anglican Diocese of Accra in the Church of the Province of West Africa.

Holy Trinity Orthodox Cathedral, Lutsk: The Holy Trinity Orthodox Cathedral in Lutsk, Ukraine, forms part of the Bernardine Monastery and Church.  It is located on Theatre Square in the center of the city.  The monastery was built in 1721.  The church, designed by architect Paweł Giżycki, was completed in 1789.  Removed from ownership of the Bernardine monks in the second half of the 19th century, the complex of buildings was donated to the Orthodox community of Lutsk.  In the 1870s, the church was reconstructed by adding a bell tower above the narthex and a central dome.  Nowadays the church is the Holy Trinity Cathedral, belonging to the Ukrainian Orthodox Church.  The former Bernardine monastery is used as a library and for small shops.

Holy Trinity Church (Nashville): Holy Trinity Church (also known as Church of the Holy Trinity) is a historic Episcopal church at 615 6th Avenue South in Nashville, Tennessee, currently a parish of the Episcopal Diocese of Tennessee.  The congregation was formed in 1849 as a mission of the nearby Christ Church Episcopal, attained parish status in 1851, and grew to around fifty members per service by the beginning of the American Civil War.  During the war, the church was occupied by Federal troops and was badly damaged.  After repairs, services continued and a new mission was opened on Wharf Avenue, which catered to the African American population of Nashville and soon overtook Holy Trinity in membership.  After Holy Trinity lost parish status in 1895, the two missions merged and continued to serve the African American community of Nashville.  Its congregation was largely made up of faculty and students from nearby Fisk University and other educational institutions.  The mission reattained parish status in 1962, and the current rector is Bill Dennler.

Holy Trinity Cathedral: Holy Trinity Cathedral, Cathedral of the Holy Trinity or Trinity Cathedral may refer to:

Most Holy Trinity Cathedral, Sonsonate: The Most Holy Trinity Cathedral (Spanish: "Catedral de la Santísima Trinidad" ) Also Sonsonate Cathedral Is the name given to a religious building affiliated with the Catholic Church located in the city of Sonsonate in the department of the same name, in the western part of the Central American country of El Salvador.  As its name indicates this is dedicated to the mystery Christian of the Holy Trinity.

Holy Trinity Cathedral, Gherla: The Holy Trinity Cathedral (Romanian: "Catedrala Armeano-Catolică Sfânta Treime" ), also known as Armenian Cathedral of the Holy Trinity, is the cathedral church of the Ordinariate for Catholics of Armenian Rite in Romania.  It is located in Gherla, Cluj County.

Supporting paragraphs: Holy Trinity Cathedral (Accra) Anglican Diocese of Accra
Answer: Anglican Communion