1751 Tiddeman Map of the Chesapeake Bay Entrance, York River, and James River

Mark Tiddeman (fl. c. 1724 - c. 1760) was a British navigator, surveyor, chartmaker, and hydrographer active in the early 18th century. Tiddeman was sailing master of the English sailing ship Tartar. From 1724 to 1728 he completed a hydrographic survey of New York Harbor and the mouth of the Chesapeake. These surveys were eventually adopted by Mount and Page for inclusion in the 1732 fourth book of the English Pilot. On returning to England Tiddeman completed several surveys of the Highlands of Scotland for Admiral Wagner, who was then stationed on the Coast of Scotland. On March 27th of 1741 he was commissioned as a Lieutenant in the Royal Navy. He later became a Captain and piloted several ships to and from the British West Indies.

Mount and Page (fl. 1701 - 1760) was a London based firm of religious and maritime publishers that flourished in the 18th century. With the publication of the 1732 English Pilot, the Mount and Page name became well-known worldwide as an imprint of nautical charts. The firm was founded at Tower Hill, London, in 1701 by Richard Mount (1654 - 1722) and his apprentice Thomas Page (1780 - March 15, 1733). Mount had previously been in partnership with his father-in-law William Fisher (1631 - 1691) and inherited the business on the latter's death. Page completed his apprenticeship in 1716. Now fully partnered, Mount and Page subsequently acquired the map plates several defunct British nautical chart publishers, including Greenville Collins, Jeremiah Seller, Charles Price, and John and Samuel Thornton - thus nearly monopolizing the British nautical chart business. The firm consequently received several lucrative government contracts and thereby flourished throughout the 18th century, making the fortunes of both families. Successive generations of Mounts and Pages worked in the business, and the families intermarried. Its staple titles were The English Pilot and Navigatio Britannica by John Barrow. By the 1760s, Richard Mount's grandson John Mount (1725 - 1786) was able to retire to Berkshire where he built the stately mansion, Wasing Place. John's son William (1753 - 1815) was the last to work in the map business, and later generations went into politics.