Rögnvald Kali Kolsson (b. 1100), Earl of Orkney and Saint
Rögnvald Kali Kolsson (Old Norse Rǫgnvaldr or Rögnvaldr; Nynorsk: Ragnvald Kale Kolsson), also known as Saint Ronald of Orkney (c. 1100 – 1158), was a Norwegian earl of Orkney who came to be regarded as a Christian saint. Two of the Orkney Islands are named after Rögnvald, namely North Ronaldsay and South Ronaldsay.