Dukedom/ˈduːkdəm/ Definition 1 of 2Pro Tip 1/3Historical Context Dukedoms are often associated with historical lands and power from medieval times. The dukedom of Lancaster has a rich history dating back centuries. Pro Tip 2/3Cultural Significance In the UK, dukedoms can imply significant social status and heritage. Owning a historic dukedom often comes with cultural responsibilities. Pro Tip 3/3Territorial Importance Territorial dukedoms may include lands, estates, and even titles to the residents. The Duke of Cornwall oversees a dukedom with expansive lands.