Deira
…Deira ( DY-rə, DAIR-ə; Old Welsh/Cumbric: Deywr or Deifr; Old English: Dere or Dera rice) was an area of Post-Roman Britain, and a later Anglian kingdom. The name of the kingdom is of Brythonic origin, and is derived from the Proto-Celtic *daru, meaning 'oak' (derw in modern…