Historia Welforum

The Historia Welforum is an anonymous Latin prose chronicle of the House of Welf written around 1170.

Because two manuscript copies originate in Weingarten (Altdorf), the work is sometimes known as the Historia Welforum Weingartensis or Chronica Altorfensium.

[3] Five manuscript copies of the Historia Welform survive and a sixth was the basis of a printed edition before it was lost:[2] The Historia is the third and the most detailed of the historical works produced for the Welfs in the 12th century, following the Genealogia Welforum (before 1126) and the lost Saxon Welf Source (1130s).

The Roman senator Catiline is considered an ancestor and his name derived from Latin catulus, which is synonymous with Middle High German welf, both meaning 'whelp'.

His mother, Imiza of Luxembourg, overruled his testament and gave the inheritance to Welf IV, the son of her daughter Kunigunde and Azzo II of Este.

[4] The Fulda manuscript includes a family tree that is based on the text of the Historia (with some additions).