reunionist

re·un·ion·ist

R0201200 (rē-yo͞on′yə-nĭst)n. One who advocates reunion, as of divided parties or sects, especially the reunion of the Catholic and Protestant branches of Christianity.
re·un′ion·ism n.re·un′ion·is′tic adj.

reunionist

(riːˈjuːnjənɪst) n (Ecclesiastical Terms) a person who desires or works for reunion between the Roman Catholic Church and the Church of England reˈunionism n reˌunionˈistic adj