Donnchad I, Earl of Fife
Donnchad, Earl of Fife, usually known in English as Duncan, was the first Gaelic magnate to have his territory regranted to him by feudal charter, by King David in 1136. Wikipedia
Born: 1133
Died: 1154 (age 21 years)
Great grandchild: John of Strathbogie
Children: Donnchad II, Earl of Fife
Grandchildren: Máel Coluim I, Earl of Fife and David of Strathbogie