When the law was passed in mid-1701, Sophia at age 70, five of her children from ages 35 to 41, and three legitimate grandchildren from ages 14 to 18, were alive. Although Sophia was in her seventy-first year, older than Anne by thirty-five years, she was very fit and healthy, and invested time and energy in securing the succession either for herself or her son. There are more than 5,000 legitimate descendants of Sophia, although not all are in the line of succession. The Sophia Naturalization Act 1705 granted the right of British (or more correctly English, as Great Britain only came into existence in 1707) nationality to Sophia's non-Roman Catholic descendants; those who had obtained the right to British citizenship via this Act at any time before its repeal by the British Nationality Act 1948 retain this lawful right today.