So...to which "Saxe-Gotha" are you referring??

During my collecting of Seven Years War miniatures, I have somehow managed to pick several units that are all identified as “Saxe-Gotha.” Having just recently noted this, I thought it would be interesting to see if these units were all, in fact, named after the same proprietor (Inhaber or Chef depending on country).

Here are the units I have discovered with the name Saxe-Gotha. In German, it would be Sachsen-Gotha, but I will use “Saxe-.” Actually, at the time of the Seven Years War, it was technically Sachsen-Gotha-Altenburg.

The ruling Duke of Saxe-Gotha-Altenburg in 1756 was Frederick III, Duke of Saxe-Gotha-Altenburg. His consort was Luise Dorothea of Saxe-Meiningen. Their only son of military age, Frederick, died on 9 June, 1756.

Austrian IR 30, Saxe-Gotha Infantry Inhaber ?? Raised in the Netherlands

Austrian DR 28, Saxe-Gotha Dragoons Inhaber Field Marshal Prinz Johann August prince of Sachsen Gotha, brother of the ruling Duke

Hanoverian IR 9A Infantry “Herzogin” von Saxe-Gotha Originally a Saxe-Gotha unit, then under British subsidy, then absorbed into the Hanoverian army in 1759. Later known as Saxe-Gotha von Wurmb.

Electoral Saxon IR Prinz Gotha Infantry Inhaber Johann Adolf, Prinz von Sachsen-Gotha youngest of the Duke’s brothers; captured at Pirna; reformed 1757 in Hungary and then transferred to French service

IR Saxe-Gotha Infantry Diocese of Münster Inhaber??

Ducal Saxon Regiment Infantry Upper Saxon Circle Inhaber??

DR Saxe-Gotha Dragoons Upper Saxon Circle Inhaber??

I have been unable to find a list of the full names of the Austrian Inhaber, to confirm which “Saxe-Gotha” was Inhaber of IR 30.

Any help, on any of these units, would be appreciated.