Lambert

  Notater:

Lampert (died c.1096) was a member of the Árpád dynasty; Duke of one-third of the Kingdom of Hungary.

Lampert was the third son of the future King Béla I of Hungary and his Polish wife. He was born in Hungary when his father had already returned from Poland and had already received the Tercia pars regni in appanage from his brother, King Andrew I of Hungary.

Following the death of King Béla I (11 September 1063), Lampert and his elder brothers (Géza and Ladislaus) fled to Poland from their cousin, King Solomon, who had returned to the kingdom with the military assistance of the Emperor Henry IV. When the German armies left the kingdom shortly afterwards, the three brothers returned followed by the troops King Boleslaw II, their maternal cousin, provided them. The parties, however, wanted to avoid the civil war; therefore they accepted the mediation services of the bishops, and they made an agreement (20 January 1064) in Gyor. Under the agreement, Lampert and his brothers accepted King Solomon's rule, and they received their father's former duchy, i.e., the Tercia pars regni.