1654 or early in 1655, he entered the household of one of his father's cousins, Sir Edward Montagu, who was later created the 1st Earl of Sandwich. When he was 22, Pepys married fourteen-year-old Elisabeth de St Michel, a descendant of French Huguenot immigrants, first in a religious ceremony on 10 October 1655 and later in a civil ceremony on 1 December 1655 at St Margaret's, Westminster. Illness From a young age, Pepys suffered from bladder stones in his urinary tract—a condition from which his mother and brother John also later suffered. He was almost never without pain, as well as other symptoms, including "blood in the urine" (haematuria). By the time of his marriage, the condition was very severe. In 1657 Pepys decided to undergo surgery; not an easy option, as the operation was known to be especially painful and hazardous. Nevertheless, Pepys consulted surgeon Thomas Hollier and, on 26 March 1658, the operation took place in a bedroom in the house of Pepys's cousin Jane Turner. Pepys's stone was successfully removed and he resolved to hold a celebration on every anniversary of the operation, which he did for several years. However, there were long-term effects from the operation. The incision on his bladder broke open again late in his life. The procedure may have left him sterile, though there is no direct evidence for this, as he was childless before the operation. In mid-1658 Pepys moved to Axe Yard, near the modern Downing Street. He worked as a teller in the Exchequer under George Downing. Diary On 1 January 1660 ("1 January 1659/1660" in contemporary terms), Pepys began to keep a diary. He recorded his daily life for almost ten years. This record of a decade of Pepys's life is more than a million words long and is often regarded as Britain's most celebrated diary. Pepys has been called the greatest diarist of all time due to his frankness in writing concerning his own weaknesses and the accuracy with which he records events of daily British life and major events in the 17th century. Pepys wrote about the contemporary court and theatre (including his amorous affairs with the actresses), his household, and major political and social occurrences. Historians have been using his diary to gain greater insight and understanding of life in London in the 17th century. Pepys wrote consistently on subjects such as personal finances, the time