The ladies of Celtic Woman are impressed by the spirited way Americans celebrate St. Patrick’s Day, even if it isn’t an official holiday like in their native Ireland. “The decorations in the bars and restaurants and the buildup makes us very proud to be Irish,” Susan McFadden, the newest member of the musical group, said Thursday. “The green beer and dyeing your rivers green — we don’t even do that [in Ireland],” violinist Mairead Nesbitt said. Currently touring the country in support of their seventh album, “Believe,” the popular group, which is a blend of classically inspired Irish and adult contemporary music, will play a St. Patrick’s Day concert Saturday in Wallingford, Conn. The state’s governor, Dannel P. Malloy, has declared it “Celtic Woman Day” in the state. … The head of the Church of England, Rowan Williams, will step down at the end of this year after serving as Archbishop of Canterbury since 2002. The archbishop, 61, is returning to academic life and has accepted the position of master of Magdalene College, Cambridge, with effect from January 2013, the church said in a statement on its website Friday. “It has been an immense privilege to serve as Archbishop of Canterbury over the past decade,” Williams said in the statement. Williams’s time as the 104th Archbishop of Canterbury, and thus the leader of the 85 million-strong global Anglican communion, has been marked by disputes over the introduction of women bishops and the ordination of gay clergy. His resignation may open the way for the Archbishop of York, John Sentamu, who holds the second-highest post in the Church of England hierarchy, to take over, even though he’s clashed with the British government over plans to allow same-sex civil marriages.