In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Solfach like this:
SOLVA, or Solfach, a seaport village in Whitchurch parish, Pembroke; on a narrow creek of St. Bride's bay, 3¼ miles ESE of St. Davids. It has a post-office‡ under Haverfordwest; and is a pretty place, with romantic environs. Pop., 596.
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 Solfach has changed, please see our redistricted information for the modern district of Pembrokeshire. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Solfach and units named after it.
GB Historical GIS / University of Portsmouth, History of Solfach in Pembrokeshire | Map and description, A Vision of Britain through Time.
Date accessed: 10th December 2013
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Solfach".