The Historia Regum ("History of the Kings") is a historical compilation attributed to Symeon of Durham, which presents material going from the death of Bede until 1129. It survives only in one manuscript compiled in Yorkshire in the mid-to-late 12th century, though the material is earlier. It is an often-used source for medieval English and Northumbrian history. The first five sections are now attributed to Byrhtferth of Ramsey.