Hi Thalatta,
Here are the Langwill’s entries verbatim, I hope there aren’t copyright issues with my posting this info for you here-
Fentum, WWI fl London 1784 - c1821.
1763 established as music engravers, sellers, publishers by the flautist Jonathan Fentum; 1784 succeeded by John (d 1843), listed as “Music Instrument Maker”; from 1821 listed as “masquerade warehouse”, “music and masquerade warehouse”; c1836 succeeded by Mrs Mary Ann Fentum, listed as “Music Seller and Publisher”; 1845 succeeded by Henry Fentum. See also Florio, Tacet.
MARK: FENTUM / 78 STRAND / LONDON
ADDRESS: 1763 - 1784: “Jonathan Fentum”, 22 Exeter Exchange in the Strand etc; 1784-96: “John Fentum”, 78 Strand; 1801-36: “Jonathan Fentum”, ditto; 1837-44 “Mary Annn Fentum”, ditto.
WRITINGS: Jonathan Fentum, Complete Tutor for the German Flute (London c1765)
LOCATION: flute: US-DC-Washington: 1100 (incomplete): keyed bugle: GB-Keighley (6k).
Fentum, Francis WWI fl London 1837 - 1845.
1844-45 listed as “Flute Manufacturer”.
ADDRESS: 1837-43: 36 Queens Row, Walworth; 1844-45: 29 Queens Row, Walworth
LOCATION: flute: private collection (4k)
Fentum, Henry WWI, BI fl London c1840 - 1859.
Maker, repairer, teacher of flute, WI dealer; 1845 successor to Mrs Mary Ann Fentum (see FENTUM); an advertisment of c1840 offers “cocoa flutes” (8k) with “patent head”; flageolet, clarinet, keyed bugle reported.
MARK: “H. Fentum, London”
ADDRESS: a 1845: 6 Surrey St., Strand; 1845-59; 78 Strand.
Fentum, Jonathan WWI fl London 1850-1856.
1850-56 Listed as “Flute Maker”.
ADDRESS: 1850-56: 105 Fenchurch St.
BIBLIOGRAPHY: Smith in Grove 5, Humphries and Smith 1970.
Here’s the Langwill’s entry for Florio:
Florio, Pietro Grassi (b ?Italy c1730; d London 1795) WWI fl London late 18c.
Flute player, inventor; by 1756 flautist at the Court of Dresden; 1756 left for Paris; by c1760 in London, where he pursued a successful career as flautist; associated with the player TACET over the adding of new keys to the flute. Jonathan Fentum’s (see FENTUM) tutor of c1765 showing “Florio & Tacet’s new invented German flute with all the Keys” (6k); according to Cornelius WARD (1844, quoted in Bate) he attempted to keep the foot-joint keys concealed from his colleagues; according to Byrne, HALE was probably the maker of two of his flutes with extended foot-joint, since the C and C# keys bear the latter’s mark. See also POTTER, GEDNEY.
MARK: FLORIO / LONDON
ADDRESS: 1767: “with Mr. Moon, watchmaker, in Clements Inn”; 1781: 113 Wardour St.; 1794: 9 Portland Place, St. James.
LOCATION: flute: GB-Oxford: 114 (4k)
BIBLIOGRAPHY: GerberNL, Byrne in GSJ 18.10, O’Loughlin in NGDMI, Fentum c1765, Carse 1940, Bate 1969.
The Langwill’s entry for Tacet:
Tacet, Joseph (b ?Nantes; d London 1801)
WWI Inventor fl London
According to Schilling (1838), born in London, according to MGG (1961), in Nantes; flute-player, 1760-86 rate-payer at Meards Court, Dean St.; according to Samuel Arnold’s tutor (1787), it was he that had first suggested the adding of keys to the flute; Jonathan Fentum’s (see FENTUM) tutor of c1765 depicts “Florio & Tacet’s new invented German Flute with all the Keys” (6k); 1794 (I) J.F. BOIE advertised in AMZ flutes made with “pewter-plug” flute keys, which he calls “Tacett’sche Klappen”, attributed to him their recent invention; according to Sachs, he patented in 1790 the “Zinnpolster & Lochfutter” (zinc pad and tone hole lining) (but see R. POTTER); Byrne suggests that he may have collaborated with MASON over his extended flute foot joint of 1756. See also GEDNEY.
WRITINGS: Six Solos for a German Flute op.1 (London 1767)
BIBLIOGRAPHY: Schilling, Chaillon-Guiomar in MGG (sv “Nantes”), Byrne in GSJ 18.10, Arnold 1787, Welch 1911, Sachs 1922.