The Hubbards traveled to England in September 1952 when Mary Sue was eight months pregnant. According to the Church of Scientology, the reason for the trip was that "amid the constant violence of the turncoat Don J. Purcell of Wichita and his suits which attempted to seize Scientology, Mary Sue became ill and to save her life, Ron took her to England where several Dianetic groups had asked him to form an organization." Russell Miller gives a different explanation: "Hubbard wanted to go to London to establish his control over the small Dianetics group which had formed there spontaneously and Mary Sue insisted on accompanying him." Three weeks later, on September 24, 1952, she gave birth to her first child, Diana Meredith de Wolfe Hubbard. The Hubbards returned to the United States in November when their visa expired and moved into an apartment in Philadelphia.