https://unblinkingeye.com/Guns/Warner/warner.html
Kirtland Brothers & Company was an outfitter and outdoor equipment company that also sold dry goods and a variety of personal and household items in Lower Manhattan beginning in 1870. An 1893 advertisement lists their address as 62 Fulton Street. A later catalogue shows the company as “Kirtland Bros & Co, Dealers in Family Supplies - Sporting & Military Goods,” with locations in New York, Chicago, and London. The New York address in the later catalogue is 296 Broadway--only a few blocks away from the Fulton Street address. Later still advertisements and catalogues list another nearby address at 90 Chambers Street and also 96 Chambers Street.

Franklin Brockway Warner was born 28 July 1862. We find him listed as the director of Kirtland Brothers, 90 Chambers Street, in 1904 in the Directory of the Boroughs of Manhattan and the Bronx. Clues in a 1920’s catalogue indicate he may have managed Kirtland Brothers as early as1891. Late in 1913 Warner filed a patent on a telescope design, and in 1915 he filed two patents related to the manufacture of shotgun barrels. In the 1915-1916 Directory of Directors in the City of New York, we find F.B. Warner listed as President and Director of Kirtland Brothers & Co. aswell as President and Director of the Warner Arms Corporation. In the same publication, his brother Marvin (born 10 January 1864) is listed as Director of Kirtland Brothers and Vice-President and Director of Warner Arms Corporation. Early advertisements for the Schwarzlose pistol list the address of Warner Arms Corporation as 33 Prospect Street, Brooklyn, New York.

Andrew Fyrberg was a firearms designer and manufacturer. In the 1880’s he designed a number of revolvers with or for Iver Johnson, and in 1896 began making revolvers and shotguns under his ownname. He is most famous for his 1891 (filing date) transfer-bar safety design for revolvers (U.S. patent 566,393) which was assigned to Iver Johnson. He did business in Worcester, Massachusettsas Andrew Fyrberg & Sons from 1886 to 1902, and established Andrew Fyrberg & Co. in Hopkinton, Massachusetts from 1902 to 1910. Sears, Roebuck & Co. bought a part interest in hisWorcester company in 1902 and bought him out completely in 1905, moving the factory to Meriden, Connecticut. It seems likely that Fyrberg licensed his 1903 top-break revolver design (U.S. patent735,490) to Warner Arms, as the Warner revolvers appear nearly identical to guns marked Andrew Fyrberg & Co. So far as we know, the Infallible is the only self-loading pistol Fyrberg ever designed.