This family tree shows the development of the Saxe Coburg and Gotha dynasty from the beginning of the 19th century. The first duke of Saxe-Coburg and Gotha was Ernest I (reigned from 1826 until his death in 1844).
Saxe Coburg Dynasty Family Tree, digital production, 2012, artist: JMvanDijk; source: Wikimedia Commons, https://commons.wikimedia.org/wiki/File:Saxe_Coburg_Dynasty_Family_Tree.PNG, Creative Commons Attribution-Share Alike 3.0 Unported (CC BY-SA 3.0), https://creativecommons.org/licenses/by-sa/3.0/deed.en.