Franz Josef von Hallwyl

Franz Josef von Hallwyl (2 September 1719 – 6 April or 7 May 1785) was a Swiss mercenary in the service of France who reached the rank of maréchal de camp.

Biography Hallwyl was born on 2 September 1719 in Solothurn, in the Swiss canton of Solothurn, into the noble . He was the son Abraham Gabriel von Hallwyl, a lieutenant-colonel in French service and commander of Thann, and Anna Franziska de Tayac, a native of Thann.

After the dissolution his regiment in 1763, Hallwyl received an annual pension of 20,000 livres from the French Crown. King Stanisław II August of Poland made him a knight of the Order of the White Eagle in 1777. In 1782, Hallwyl was appointed military commander of Colmar, where he died on 6 April or 7 May 1785, aged 66.