Welf I of Metz ¹

   Other names for Welf were Hwelf of Altdorf, Hwelf I of Metz and Welf of Altdorf.

  Research Notes:

From Wikipedia - Welf (father of Judith) :

Welf or Hwelf also known as Welf I, was the son of the 9th century Frankish count Rothard of Metz . He is the oldest known member of the Elder House of Welf . Welf is mentioned only once: on the occasion of the wedding of his daughter Judith with Emperor Louis the Pious in 819.

Marriage and issue
Welf married Hedwig, Duchess of Bavaria , daughter of the Saxon count Isanbart ; Hedwig was abbess of Chelles . They had the following:
Judith , Roman Empress and Frankish Queen, died 843;
Rudolph , died 866;
Conrad , Count of Paris, ancestor of the Welf kings of Burgundy ;
Hemma , Frankish Queen, died 876.

  Noted events in his life were:

• Living, 819.

Welf married Hedwig Duchess of Bavaria, daughter of Isanbart and Unknown.