Sir John Maclean , KB, Federal Security Agency, was a British civil servant, genealogist and author
Maclean was a son of Mr. Robert Lean, of Trehudreth, Blisland, Cornwall, where he was born in 1811. His mother Elizabeth was a daughter of Mr.
Thomas Every, of Bodmin.
His name was originally John Lean but he adopted that of Maclean) In 1837 he entered the Ordnance Department of the War Office, and became deputy auditor in April, 1865. He resigned this post on a pension, and received a knighthood in January, 1871. Sir John Maclean died at his residence, Glasbury House, Richmond Hill, Clifton, Bristol, of influenza. on Tuesday 5 March 1895.