William III of Weimar (''Wilhelmi Thuringorum praetor''; died 16 April 1039) was count of

Weimar Weimar is a city in the state of Thuringia, Germany. It is located in Central Germany between Erfurt in the west and Jena in the east, approximately southwest of Leipzig, north of Nuremberg and west of Dresden. Together with the neighbouri ...

from 1003 and of the

Eichsfeld The Eichsfeld ( or ; English: ''Oak-field'') is a historical region in the southeast of the state of Lower Saxony (which is called "Untereichsfeld" = lower Eichsfeld) and northwest of the state of Thuringia ("Obereichsfeld" = upper Eichsfeld) in th ...

from 1022. He was the youngest son of Count

William II of Weimar William II the Great (c. 930/93524 December 1003) was Count of Weimar from 963 and Duke of Thuringia This is a list of the rulers of Thuringia, a historical and political region of Central Germany. Kings of Thuringia *450–500 Bisinus *50 ...

Family

* His first marriage was to Bertha. * His second marriage was to Oda (probably the daughter of

Thietmar, Margrave of the Saxon Ostmark Thietmar (IV) (born ca. 990; died 10 January 1030) was the Count of the Schwabengau and Nordthüringgau from 1010 and the Margrave of the Saxon Ostmark from 1015 until his death. He was the son and successor of Margrave Gero II. His mother was Ade ...

). They had children: **

William IV William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June 1830 until his death in 1837. The third son of George III, William succeeded h ...

(died 1062),

Margrave of Meissen This article lists the margraves of Meissen, a march and territorial state on the eastern border of the Holy Roman Empire. History King Henry the Fowler, on his 928-29 campaign against the Slavic Glomacze tribes, had a fortress erected on a hil ...

from 1046 **

Otto I Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (german: Otto der Große, it, Ottone il Grande), was East Francia, East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the olde ...

(died 1067), count of Orlamünde ** Poppo (died after 1046) ** Aribo (murdered 1070) After his death, Oda married Dedi I, Margrave of Lusatia. 1039 deaths Year of birth unknown House of Weimar {{Germany-noble-stub