Frederick William was a German sovereign who ruled over the state of Mecklenburg-Strelitz as grand duke from 1860 until his death.
The Grand Duke c. 1887
Adolphus Frederick VI
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Adolphus Frederick VI was the last reigning Grand Duke of Mecklenburg-Strelitz.
Adolphus Frederick VI in 1916
Neustrelitz Palace (ca. 1900)
Adolf Frederick in 1909