Holy Trinity Church of Cambridge, MA, is honored to welcome His Holiness Karekin II, Catholicos of All Armenians, on Friday, May 11, to preside over the 60th ordination anniversary of Fr. Mampre Kouzouian. A celebration banquet at 7:15 p.m. in the church’s Charles and Nevart Talanian Cultural Hall (145 Brattle St., Cambridge) will follow a pontifical hrashapar service at 6 p.m. All are invited to services. For the banquet, click on the links to view an announcement and reply card. Click to the parish website to read more and to RSVP (by Apr. 30).