Dennis 6.6.1794 calls / 20.6.1794 call on / 17.8.1794 calls (& Ritson) / 26.10.1794 calls (& Ritson) / 23.2.1795 call on / 6.5.1795 at Holcroft's / 22.5.1796 calls / 14.3.1797 meet / 14.4.1798 meet.
Perhaps John Dennis bookseller (Maxted) moved from Fleet Street to 6, Middle Row Holborn in 1791, issued catalogues usually as John Denis, specialised in Calvinist and Mystical Divinity, Astrology and Magic, died 23.8.1798. He or his father one of two outlets for Swedenborg's works in 1781 (newspaper ads)