Madog ap Maredudd Prince of Powys  24
- Born: Abt 1091, Powys, Wales
- Marriage: Susanna of Gwynedd 
- Died: 9 Feb 1160, Winchester, Hampshire, England about age 69
- Buried: Meifod yn Powys
Noted events in his life were:
• Acceded: throne of Powys, 1132. He followed his father on the throne of Powys in 1132.
• Military Service: Battle of Lincoln, 1141. He is recorded as taking part in the Battle of Lincoln in 1141 in support of the Earl of Chester , along with Owain Gwynedd 's brother Cadwaladr ap Gruffydd and a large army of Welshmen.
Madog married Susanna of Gwynedd  [MRIN: 2394], daughter of Gruffydd ap Cynan King of Gwynedd  and Angharad (Ankaret ) of Tegaingl .