Reginar I Longneck Lotharingian noble (0850–0915) Parents Irmengarde de Germanie Gilbert, Count of the Maasgau Children Frederick, Archbishop of Mainz Balderic of Utrecht Cunigunda of France Symphoronia de Hainaut Gilbert, Duke of Lorraine Reginar II, Count of Hainaut Siblings Wigeric of Lotharingia Sigard von Maasgau Albert von Maasgau Partners Alberade von Kleve Ermentrude of France