Nick you are not entirely correct in saying that the
Churchill Marlborough line (Spencer-Churchills) started out as
Spencer. I am not an expert on Marlboroughs but it happens that I can relate the Spencer-Churchill story.
A John
Churchill the son of the first Sir
Winston Churchill (b. 1620) became the first 1st duke of Marlborough on 9 April 1689 and died in 1722. His only son John
Churchill had died at age 17 in 1703. Upon
Duke John's death, his eldest daughter
Henrietta (
Churchill)
Godolphin then became heir and inherited the title Duchess of Marlborough. In her own right she then became the 2nd duke of Marlborough by act of parliament passed in 1722.
Upon Henriettas death in 1733 the Marlborough title passed to her nephew Charles
Spencer, 5th earl of
Sunderland who then also became 2rd duke of Marlborough. In 1807 George
Spencer the 5th duke of Marlborough was authorized to take and use the name of
Churchill, in addition to and after that of
Spencer. This was in order to perpetuate the
Churchill family surname in this line. I believe that subsequent Marlborough descendents (of the Marlborough main line) use the surname Spencer-Churchill to the present day.
For information, the
Churchill ascendancy is controversial prior to about 1270. However, the
Churchill line can be traced back to around 980. The Marlborough Churchills are only one branch of several modern
Churchill family lines. I, by the way, am not a descendent of the Marlborough line.
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