[PAR] [TLE] Otto I, Holy Roman Emperor [SEP] Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (German: "Otto der Große" ), was German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973.  He was the oldest son of Henry I the Fowler and Matilda. [PAR] [TLE] Matilda of Ringelheim [SEP] Saint Matilda (  894/97 – 14 March 968) was Duchess of Saxony from 912 and German queen (Queen of the Franks) from 919 by her marriage with Henry the Fowler, the first king of the Ottonian dynasty.  Upon her husband's death in 936, she founded Quedlinburg Abbey to commemorate the late king.  Matilda lived to see Western Imperial rule restored when her eldest son Otto was crowned Holy Roman Emperor in 962.  Her surname refers to Ringelheim, where her comital Immedinger relatives established a nunnery about 940.
[PAR] [TLE] Otto I , Holy Roman Emperor [ SEP ] Otto I ( 23 November 912 – 7 May 973 ) , traditionally known as Otto the Great ( German : " Otto der Große " ) , was German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973 . He was the oldest son of Henry I the Fowler and Matilda . [PAR] [TLE] Matilda of Ringelheim [ SEP ] Saint Matilda ( 894/97 – 14 March 968 ) was Duchess of Saxony from 912 and German queen ( Queen of the Franks ) from 919 by her marriage with Henry the Fowler , the first king of the Ottonian dynasty . Upon her husband 's death in 936 , she founded Quedlinburg Abbey to commemorate the late king . Matilda lived to see Western Imperial rule restored when her eldest son Otto was crowned Holy Roman Emperor in 962 . Her surname refers to Ringelheim , where her comital Immedinger relatives established a nunnery about 940 .
What year did Otto I, Holy Roman Emperor's mother become Duchess of Saxony?
What year did Otto I , Holy Roman Emperor 's mother become Duchess of Saxony ?
912
912