Otto I Herzog von Braunschweig-Lüneburg was born circa 1204 He was the son of William of Winchester Herzog von Braunschweig-Lüneburg and Helen Valdemarsdottir, Princess of Denmark. He married Matilde von Brandenburg, daughter of Albrecht II Markgraf von Brandenburg and Matilde von der Lausitz, circa 1228. He died on 9 June 1252.
Otto I Herzog von Braunschweig-Lüneburg also went by the nick-name of Otto 'The Child'.2 He gained the title of Herzog von Braunschweig-Lüneburg in 1235. Children of Otto I Herzog von Braunschweig-Lüneburg and Matilde von Brandenburg [1]
Johann II Herzog von Braunschweig-Lüneburg+2 d. 13 Dec 1277
Otto von Braunschweig-Lüneburg d. 4 Jul 1279
Conrad von Braunschweig-Lüneburg d. 15 Sep 1300
Adelheid von Braunschweig-Lüneburg+3 d. 12 Jun 1274
Agnes von Braunschweig-Lüneburg+ d. a 1302
Matilde von Braunschweig-Lüneburg+ b. c 1229, d. bt 1295 - 1298
Elisabeth von Braunschweig-Lüneburg+1 b. 1230, d. 27 May 1266
Helene von Braunschweig-Lüneburg+ b. c 1231, d. 6 Sep 1273
Albrecht I Herzog von Braunschweig-Lüneburg+2 b. c 1236, d. 15 Aug 1279
Otto I of Brunswick-Lüneburg (about 1204 – 9 June 1252), a member of the House of Welf, was the first duke of Brunswick-Lüneburg from 1235 until his death. He is called Otto the Child. only son of William of Winchester and his wife Helena, a daughter of King Valdemar I of Denmark. Otto married Matilda, daughter of Albert II, Margrave of Brandenburg, around 1228. [2]
↑ Source: The peerage Citations [S16 Jirí Louda and Michael MacLagan, Lines of Succession: Heraldry of the Royal Families of Europe, 2nd edition (London, U.K.: Little, Brown and Company, 1999), table 113. Hereinafter cited as Lines of Succession. [S38] John Morby, Dynasties of the World: a chronological and genealogical handbook (Oxford, Oxfordshire, U.K.: Oxford University Press, 1989), page 132. Hereinafter cited as Dynasties of the World.
[S37] BP2003 volume 2, page 2692. See link for full details for this source. Hereinafter cited as. [S37]
Source: S2 Title: Pedigree Resource File CD 49 Abbreviation: Pedigree Resource File CD 49 Publication: (Salt Lake City, UT: Intellectual Reserve, Inc., 2002)
Source: S3 Title: Ancestral File (TM) Abbreviation: Ancestral File (TM) Author: The Church of Jesus Christ of Latter-day SAINTS Publication: June 1998 (c), data as of 5 JAN 1998 Repository: #R1 Repository: R1 Name: Unknown
Travis Wagner, firsthand knowledge. Click the Changes tab for the details of edits by Travis and others.
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WikiTree profile UNKNOWN-77753 created through the import of FAMILY 6162011.GED on Jun 20, 2011 by Michael Stephenson. See the Changes page for the details of edits by Michael and others.Couldn't find any valid last name at birth.Prior to import, this record was last changed 24 JAN 2011
WikiTree profile UNKNOWN-83421 created through the import of heinakuu2011-6.ged on Jul 5, 2011 by Johanna Amnelin. See the Changes page for the details of edits by Johanna and others.: User ID: 852BD451315F4CBF9CF5494E5281C60536C5 Prior to import, this record was last changed 23:00 28 Mar 2011.
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If your question is DNA related I think perhaps someone of our DNA project is able to help ?
Greets from the Netherlands and hope it helps ,
Bea