Samuel Pepys PRS (23 February 1633 - 26 May 1703) was an English diarist and naval administrator. He served as administrator of the Navy of England and Member of Parliament and is most famous for the diary he kept for a decade while still a young man. The detailed private diary that Pepys kept from 1660 until 1669 was first published in the 19th century and is one of the most important primary sources for the English Restoration period.