Bismarck called Saxe-Coburg the stud farm of European royalty for good reason.
https://books.google.com/books?id=aOO601TsAOgC&pg=PA257&lpg=PA257&dq=saxe-coburg+stud+farm+of+european+royalty&source=bl&ots=zLlI0gc136&sig=xH1lb2Z7FUM6DUNCGJe6BRjzSyY&hl=en&sa=X&ei=9rx2Va_gHcOjyASE2IGABg&ved=0CEIQ6AEwBg#v=onepage&q=saxe-coburg%20stud%20farm%20of%20european%20royalty&f=false
Great link; I read everything there that was visible to me.