The Dumaresq is a mechanical calculating device invented around 1902 by Lieutenant John Dumaresq of the Royal Navy.
He served during World War I but is most remembered as an inventor, for development of the device named after him, the Dumaresq, which helped users calculate the rate at which the range to an enemy ship was changing over time.
A small military settlement called Fort Dumaresq was established near the present-day site of Rhyll on the north coast of Phillip Island.
Dumaresq took his family on holiday to England in 1853, mainly spending time at Malvern Wells in Worcestershire.
The first event Dumaresq entered was the Bear Mountain race held in Mission, BC in May 2001.
Mrs. Dumaresq died in 1720 at Hertford, and desired to be buried at Easthampstead ‘as near my dear father as may be.’ Her will of 25 December 1715, with two codicils of 2 (sic) December 1715, and 24 October 1717, was proved at London on 20 December 1720.