Choose from options: Determine if the sentence is true based on the text below:
The ruling of the duchy was by only  a portion of a particular house

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. It lasted from 1826 to 1918.
Options:
 - Yes
 - It's impossible to say
 - No