1906 - 1907
Quadrant was a pioneer British motorcycle manufacturer, making their first 2-wheeler in 1900. They were best-known for these and for tricars, but made a few 4-wheeled cars with 14/16 or 20/22hp 4-cylinder White & Poppe engines. Motorcycles were made until 1927.
Source: Nick Georgano / The Beaulieu Encyclopaedia of the Automobile