of the bridge. The point where the spring emerged was fashioned into a stone 'fountain well' which was regrettably demolished during the road works to improve the road. Over many years, Trethomas has continually expanded in all directions, not only in industry, but in housing as well, so much so that it is now difficult to work out exactly where Bedwas ends and Trethomas starts. Today notable residents include Jeff Whitefoot (Bedwas, Cardiff and Wales Lions rugby player), Councillor Elizabeth Aldworth who became the Lady Mayor of Caerphilly County Borough Council in 2006 and local legend Rachel Ball. Health research Men from Trethomas participate in one of the world's longest running epidemiology studies - The Caerphilly Heart Disease Study. Since 1979, a representative sample of adult males born between 1918 and 1938, living in Caerphilly and the surrounding villages of Abertridwr, Bedwas, Machen, Senghenydd and Trethomas, have participated in the study. A wide range of health and lifestyle data have been collected throughout the study and have been the basis of over 400 publications in the medical press. A notable report was on the reductions in vascular disease, diabetes, cognitive impairment and dementia attributable to a healthy lifestyle. References External links www.geograph.co.uk : photos of Trethomas and surrounding area Welsh Coal Mines - check out the histories of the local pits Villages in Caerphilly County Borough