U2 rocker Adam Clayton has married Brazilian model Mariana Teixeira de Carvalho, his girlfriend of four years, at a Dublin registry office, the BBC reported. Clayton proposed to Teixeira at Carnival in Brazil earlier this year. U2 guitarist The Edge and his wife Morleigh Steinberg attended the couple\'s civil wedding service Wednesday, the BBC said. The newlyweds are to celebrate their marriage with more than 150 guests at a reception in France this weekend.