There was Feldmarschall von Hindenburg, the greatest German hero of World War I, and beside him Frau von Hindenburg, his wife.
"married woman," 1813, from German Frau "woman, wife," from Middle High German vrouwe "lady, mistress," from Old High German frouwa "mistress, lady" (9c.), from Proto-Germanic *frowo- "lady," fem. of *frawan "lord," from PIE root *per- (1) "beyond, forward," in extended senses "chief, first" (see per).
One's wife: and escort your incomparable frau to a tea dance/ his reward from the frau
[1902+; fr German]