However, dollar does not derive from Spanish. It comes from German, Thaler

D'Oh! I should have remembered that. To show my appreciation for your instruction, please allow me to offer you By the way, where can I track down the Old English connection? My humble Chamber's says:
"[Ger. T(h)aler (L.G. daler), short for Joachimsthaler, because first coined at the silver-mines in Joachimsthal(Joachim's Dale) in Bohemia.]"