Who was the secretary at the Admiralty and kept a diary between 1660 and 1669?

The individual who served as secretary at the Admiralty and kept a diary between 1660 and 1669 is Samuel Pepys. His diaries are a crucial primary source for historians studying 17th century England, particularly the experiences of daily life, significant events, and the political atmosphere of the time, including the Restoration period. Pepys documented a wide array of topics, from naval affairs to his personal life, providing valuable insight into his thoughts and the societal context of the era.

The other figures listed, while significant in their own rights and related to English history, do not fit the specific role of secretary at the Admiralty during that timeframe. John Evelyn was a contemporary of Pepys and also maintained a diary, but his focus was broader and his diary did not serve as a maritime record. Charles II was the monarch during this period but not involved in the role of secretary at the Admiralty. Thomas Wolsey, on the other hand, was an important advisor in earlier years, well before the time of Pepys, and his prominence declined in the early 16th century. Thus, Samuel Pepys stands out as the correct answer for this question.