Toscead betweox fadungum "Brūcendmōtung:Wōdenhelm"

I recently made a page about Düsseldorf in Old English and I want to know if I did it correctly. I don't know much about Old English grammar and I treat the Language like Germanized Engish but I made sure that I was using the right words for the translation. Also wouldn't Düsseldorf be Dysselðorp not Dysselþorp although I do believe thorn and Eth can be used interchangeably. Can C and K be used interchangeably for spelling?
~~Wario Toad 32~~