In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Mochdre like this:
MOCHDRE, a township in Llandrillo-yn-Rhos parish, Denbigh; 3¼ miles ENE of Conway. It has a postoffice under Conway.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Mochdre has changed, please see our redistricted information for the modern district of Conwy. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Mochdre and units named after it.
GB Historical GIS / University of Portsmouth, History of Mochdre, in Conwy and Denbighshire | Map and description, A Vision of Britain through Time.
Date accessed: 08th February 2016
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Mochdre".