Evans, John Silas , Canon (1864-1953), amateur astronomer and
author, served as a curate in Dyserth and Vicar of Cyffylliog.

Jenkins, Griffith Parry (1860-1940), amateur observer, popular lecturer, one time resident in Colwyn Bay.

Mills, Caradoc, amateur astronomer, popular author, Llanrwst.

Owen, Derek (?-1989), Pensarn, amateur observer.

Owen, Gwilym, Prof. (1880-1940), professor of physics at Aberystwyth, born in Denbigh.

Roberts, Isaac, Dr. (1829-1904), pioneer of astrophotography was born at Y Groes, near Denbigh (see Lancashire).

Societies and Organisations

Clwyd Astronomical Society (ClAS), existed (1976-c.1979).

North Clwyd Astronomical Society (NCAS), existed (1981-1989).

Authors, lecturers, broadcasters

Gwilym Owen, Prof. (1880-1940), professor of physics at Aberystwyth and author of popular books on astronomy and physics, born in Denbigh.

Academics and associated professionals

Gwilym Owen, Prof. (1880-1940), professor of physics at Aberystwyth, born in Denbigh.


Telescope/equipment manufacturers

Useful addresses

Local History Centre
46 Clwyd Street
Ruthin LL15 1HP

Tel 01824 708250

Fax 01824 708258



County Record Office
The Archive and Modern Record Service is based at:

The Old Board School
Lloyd Street, Llandudno
LL30 2YG
Telephone or fax the service on (01492) 860882,


One Response to Denbighshire

  1. Bill Barton says:

    The chronometer maker Edward John Dent, FRAS, Associate ICE, (1790-1853) worked for some time in the mid-nineteenth century to simplify the transit telescope originally developed by Ole Rømer (1644-1710) in Denmark. Dent was motivated to make it easy for the non-astronomer to ascertaining the correct time easily. He was approached by James Mackenzie Bloxam, a barrister from Denbighshire (born circa 1814, died 1857), with an already working device. The two went into partnership with the first dipleidoscopes going on sale for two guineas (£2 2s or £2.10, equivalent to £161 at 2010 prices when adjusted for inflation) in March 1843. Bloxam appears to have been afraid of compromising his professional standing as a barrister with much of his work being published only after he died. To secure their respective rights over the device, a patent was sought by Bloxam and was granted on 20 June that year (United Kingdom Patent no. 9793). A French patent was applied for on 24 July 1844. After Dent died his stepson Frederick William Dent took over manufacture.

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