Sigebert (means roughly 'Magnificent Victory', also Siegbert, Sigbert, Sigibert, Sigeberht, or Siegeberht) was the name of several early Frankish and Anglo-Saxon kings:
Sigobert the Lame (d. c. 509)
Sigebert I, king of Austrasia (r. 561–575)
Sigebert II, king of Austrasia and Burgundy (r. 613)
Sigebert III, king of Austrasia (r. 634–656)
Sigebert IV, Prince of Austrasia, grandson of Sigebert III (671–758)
Sigeberht I the Little, king of Essex (r. 617–653)
Sigeberht II the Good, king of Essex (r. 653–660)
Sigeberht of East Anglia saint and king of the East Angles (r. 629–634)
Sigeberht of Wessex (r. 756–757)
Also
Sigebert of Gembloux, Medieval author
