How long did the dynasty that Gustav Adolf von Wulffen was born in last?
Saxe-Coburg and Gotha: Saxe-Coburg and Gotha (German: "Sachsen-Coburg und Gotha" ), or Saxe-Coburg-Gotha, was an Ernestine duchy ruled by a branch of the House of Wettin, consisting of territories in the present-day states of Bavaria and Thuringia in Germany. Saxe-Coburg and Gotha:  It lasted from 1826 to 1918.
i don't know