Caereinion

{{Short description|Welsh medieval cantref}}

{{Use dmy dates|date=April 2022}}

File:Cantrefi.Medieval.Wales.jpg

Caereinion (fort of Einion) was a medieval cantref in the Kingdom of Powys,{{cite book|editor1-last=Lewis|editor1-first=C P|title=Anglo-Norman Studies XXX: Proceedings of the Battle Conference 2007|date=2008|publisher=Boydell & Brewer|page=189}} or possibly it was a commote (cwmwd) within a cantref called Llŷs Wynaf.{{cite book|last1=Carlisle|first1=Nicholas|title=A topographical dictionary of the Dominion of Wales (see e.g. Cyffin)|date=1811|publisher=Society of Antiquaries|location=London|url=https://archive.org/details/walestopographic00carluoft}} It was divided into the manors of Uwch Coed and Is Coed.{{cite book|last1=Richards|first1=Melville|title=Welsh Administrative and Territorial Units|date=1969|publisher=University of Wales|isbn=978-0900768088|url=http://powysenc.weebly.com/caban---cantref-selyf.html}}

It lay towards the south of the kingdom, bordering with the commote of Mochnant Uwch Rhaeadr of the cantref of Mochnant and the cantref of Mechain to the north, the commotes of Ystrad Marchell and Llanerch Hudol in the cantref of Ystlyg to the east, the cantrefi of Cedewain to the south and Cyfeiliog to the west.{{cite book|last1=Rees|first1=William|title=An Historical Atlas of Wales from Early to Modern Times|date=1951|publisher=Faber & Faber}}

It roughly corresponds to the later hundred of Mathrafal.{{cite web|title=Powys Local History Encyclopedia|url=http://powysenc.weebly.com/caban---cantref-selyf.html|publisher=Powys Local History Encyclopedia}}

Castle Caereinion, Caereinion Fechan, Llanfair Caereinion, Llanerfyl, Llangadfan, Llangyniew and part of Berriew are within the territory of this cantref.