Geoffrey Chaucer | Olivia de Havilland | Geoffrey Rush | Geoffrey of Monmouth | Geoffrey Moull | Geoffrey Hill | de Havilland Canada DHC-6 Twin Otter | De Havilland Mosquito | Geoffrey Keezer | Geoffrey de Montbray | Geoffrey Wilkinson | Geoffrey Howe | Geoffrey Blainey | de Havilland Vampire | de Havilland Mosquito | Geoffrey Robertson | Geoffrey Keating | De Havilland Canada DHC-6 Twin Otter | de Havilland | The Sketch Book of Geoffrey Crayon, Gent. | Geoffrey Palmer | Geoffrey Hartman | Geoffrey C. Hazard, Jr. | de Havilland Comet | Geoffrey Robinson | Geoffrey Owens | Geoffrey Layton | Geoffrey Gurrumul Yunupingu | Geoffrey de Mandeville | Geoffrey de Luterel |
Notable as the first aero engine to be designed by Geoffrey de Havilland it was produced in small numbers between 1909 and 1910 by the Iris Motor Company of Willesden from which it took its name.
On the whole the new design, produced by a team led by John Kenworthy followed the conventional "Farman" layout, as did the competing Airco DH.2 designed by Geoffrey de Havilland, who had also previously worked at the Royal Aircraft Factory - but it had some novel features.