The Zoudenbalch family (also known as Soudenbalch) was one of the most prominent families of Utrecht throughout the Middle Ages to the age of the Dutch Revolt. They occupied all posts of importance in the city government, possessed various lordships in the vicinity and played a leading role in the history of the Sticht (Prince-Bishopric of Utrecht). The Zoudenbalchs were also Lords of the island of Urk in the Zuiderzee (now IJsselmeer) for over a century (1476–1614), and as such played a key role in the life of that community during troubled times in the 16th century.
The Zoudenbalch (or Soudenbalch) family dominated the medieval history of Utrecht by the longevity of their influence in the temporal and spiritual life of the city. The evidence of their past glory is still evident in modern Utrecht. The ancient ancestral castle of the Zoudenbalchs still dominates the Oudegracht running through the city centre and the facade of their gothic palace continues to stand proudly in the Donkerstraat. Although their chapels in St. Marie and the Dom have been destroyed (the latter as recently as 1847) and the St. Elisabeth Gasthuis and Chapel which they founded no longer exists, eloquent testimony to their faith and influence still remains in less tangibe form. Ever since 1491, when Evert Zoudenbalch founded the first orphanage in the Netherlands, the Zoudenbalch coat of arms has continuously guarded over the orphanage complex on two locations in the city as a mute tribute to the fact that their charity has funded half a millennium of social work in Utrecht.
The Zoudenbalchs are first mentioned in the city government of Utrecht in the early 13th century and continued to hold important posts there until the sixteenth. This was in stark contrast to the other great families of Utrecht, such as the Fresingers, the Lockhorsts and the Lichtenbergers, whose apogee was of far shorter duration.
Utrecht was the principal metropolis of the northern Netherlands for the duration of the Middle Ages. The court of the Prince-Bishop, the wealth of Utrecht's many religious institutions and its location on the crossroads of various trade routes drew together the ancient blood nobility from the surrounding territories, aspiring ministerials in the service of the Prince-Bishop and all manner of free and unfree men seeking security and prosperity within the city walls. Many noble families engaged in commerce in Utrecht whilst serving in the plutocratic civic government of Utrecht together with prominent commoners; marriages between the nobility and wealthy burgher families regularly took place, blurring social distinctions intra muros.