Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,425 pages of information and 230,044 images on early companies, their products and the people who designed and built them.
1904 'COLOHAN, Dr. John F. Sydney, Woodville, Blackrock, Dublin. Cars: Daimler, Napier. Hobbies: Shooting, photography. Was the pioneer of motoring in Ireland. Several of his inventions are in use on well-known French and English cars. Is a partner in the well-known Dublin firm of Hutton and Co., motor engineers. Clubs: Irish Automobile, A.C.G.B. & I.' 
1904 'COLOHAN, Mrs. John F. Sydney, Woodville, Blackrock, Dublin. Is very fond of motoring, and constantly accompanies her husband on his Daimler and Napier cars.'