Sigard (Sigehard), was a tenth-century Lotharingian count in Hainaut and Liugas, between Liège and Aachen.
Various relationships to others have been proposed for him, but these are all uncertain.
Leon Vanderkindere proposed that this Sigehard was given the county of Hainaut while Reginar I was out of favour, however it is impossible to prove that Reginar ever held it.
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