Vice Admiral Sir Trevylyan Dacres Willes Napier, KCB MVO (19 April 1867 – 30 July 1920) was a Royal Navy officer who went on to be Commander-in-Chief, America and West Indies Station.

[4] Promoted to captain in June 1903,[5] he was appointed in command of the HMY Victoria and Albert later that year[6] and the battleship HMS Bellerophon in 1911.

[7] Promoted to rear admiral in November 1913,[8] he was based at the Royal Naval War College, then in Portsmouth, from 1913 and tested the mobilisation of the Home Fleet in June and July 1914.

[7] He was appointed Commander-in-Chief, America and West Indies Station in December 1919 but died in office during the following July.

[10] In 1911, both Napier's wife, Mary, and her father, [[Sir Michael Culme-Seymour, 3rd Baronet], were witnesses in the criminal libel trial of Edward Mylius, who had written about a rumoured 1890 marriage of the future George V to one of the Baronet's daughters, which would have made the king a bigamist (Mylius was convicted).