rhinegrave means A German count whose hereditary lands are in the Rheingau area north of the river Rhine, especially one descended from the counts of Salm. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A German count whose hereditary lands are in the Rheingau area north of the river Rhine, especially one descended from the counts of Salm.“the Turks daring the Duke daily to a sett battell, who at length drew out his Army, led by the Rhine-Grave [...].”