Selden’s work was highly esteemed, and Charles I. made an order in council that a copy should be kept in the Council chest, another in the Court of Exchequer, and a third in the Court of Admiralty. The book Pepys refers to is Nedham’s translation, which was entitled, “Of the Dominion or Ownership of the Sea. Two Books . . . , written at first in Latin and entituled Mare Clausum, by John Selden. Translated into English by Marchamont Nedham. London, 1652.” This has the Commonwealth arms on the title-page and a dedication “To the Supreme Autoritie of the Nation-The Parliament of the Commonwealth of England.” The dedication to Charles I. in Selden’s original work was left out. Apparently a new title-page and dedication was prepared in 1663, but the copy in the British Museum, which formerly belonged to Charles Killigrew, does not contain these additions.
This text comes from a footnote on a diary entry in the 1893 edition edited by Henry B. Wheatley.