probably not much help, but I can find three Wimpffens (Wimpffi?) - unfortunately none of them seem to fit your timeline:
Georges-Félix baron de Wimpffen (1744-1814)
lieutenant-général in 1792, dismissed and proscribed 1793, retired 1800
François-Louis baron de Wimpffen de Bournebourg (1732-1800)
brother of Georges-Félix
Félix Victore Emmanuel Charles baron de Wimpffen (1778- 1813)
son of François Louis, colonel of the 2e infanterie de ligne in 1809
That's all I can find in my library on a quick scan...