John Farris
... of Hartford Conneticut, USA was in business in the latter half of the 19th C.
Referring to his banjos in writing as “banjays” he patented a new instrument in April 1885.
From the patent #US315135 in which he states “This is a stringed instrument having some points of similarity to the banjo, and some other points of similarity to the mandolin, and some other points entirely new and widely differing as a whole from every prior instrument known to me.” it would appear he was the first to use the term “Banjolin” for a banjo-mandolin.
In his 5 stringed instruments he utilised a slotted peg head and guitar style open geared 5th string tuner.
Images courtesy of Jerry Mc Hugh