Fīfeldor (Denisc: Ejderen, Germanisc: Die Eider) is ēa sēo iernþ geond þǣm landhals betwuh Germanie and Ēotalande. Nū līþ Fīfeldor on Sillende-Holstān, Þēodsc land.
Þǣre ēa æwielme is nēah Bordesholme and flēowaþ be Kiel on Ostsǣ ecge, ac þonan ierneþ westweard and ūt on Norþsǣ. Fīfeldores middeldǣl brycð sē Kiel Scipryne.[1]
Gēo wæs Fīfeldor landgemære betwuh Angelcynn and Seaxe beforan þe þā mægþu segledon ofer brād brime Breten secend, and lang þæræfter wæs he landgemære betwuh Denemearc and Germanie. In æftergearum wæs hē mære betwuh Sillende and Holstāne, begen heretogarīce under þǣm Dēna cynedōme.
In 1864 onswōgon Prēosse Sillende and Holstān and gehiersomedon eall þā land oððæt ðe manige Dēne þǣr wonedon. Siððan þǣm geare hæfþ eall Fīfeldor in Þeodsclande gelagen.
On īege on Fīfeldor, swa secgað ealdu tala, stōd Offa Engla Cyning and feoht twegen æþelingas þāra Swæfa þone mearc to heoldenne. Man secgþ þeos beadu wæs æt Hæþe.