Hǽðfeld

According to the Old English Dictionary:

Hǽðfeld

Hatfield in Hertfordshire :-- Hér gesæt Þeodorius ærcebiscop senoþ on Hǽðfelda in this year archbishop Theodore presided over a synod at Hatfield, Chr. 680; Erl. 40, 11. hæðfeld,hæþ-feld