Mindelheim (German: [ˈmɪndl̩ˌhaɪ̯m] ⓘ) was a minor state of Unterallgäu in Bavaria, Germany.
He was created thus on 28 August 1704, then made Prince of Mindelheim on 18 November 1705 by Emperor Joseph I, and formally invested with this title on 24 May 1706 at the Imperial Diet.
[1] The principality was carved out of Imperial land in Swabia, and measured approximately fifteen square miles.
Marlborough succeeded in getting Mindelheim swapped for the county of Nellenburg in Further Austria, which was not elevated to be a principality.
[2] After the Treaty of Utrecht led to the loss of his Principality of Mindelheim, it was discussed to make John Churchill, 1st Duke of Marlborough prince of Nellenburg.