SOURCE-20636Research NeededProbable
Baldwin, Stewart, 'Otto I the Great,' uploaded 3 April 2011, in The Henry Projec...
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Baldwin, Stewart, 'Otto I the Great,' uploaded 3 April 2011, in The Henry Project: The Ancestors of King Henry II of England. American Society of Genealogists, https://fasg.org/projects/henryproject/: accessed 9 March 2021.