World of HYDE

Discovering our Ancestors and their descendants to all parts of the world. Last updated 5th September 2025

First Name Last Name
Home Search Login  
Print Bookmark
Magnús IV Jónsson, Jarl Of Caithness And Orkney

Magnús IV Jónsson, Jarl Of Caithness And Orkney

Male Abt 1245 - Bef 1329  (~ 83 years)

Personal Information    |    Notes    |    Event Map    |    All    |    PDF

  • Name Magnús IV Jónsson 
    Suffix Jarl Of Caithness And Orkney 
    Birth Abt 1245  Scotland Find all individuals with events at this location 
    Gender Male 
    Name Magnús Jónsson 
    _AMTID 192683891669:1030:204653251 
    _COLOR 4 
    _FSFTID GC38-BMQ 
    _UID 72CA77613A7DEF11BBF40EB6A4AE3903CCE0 
    Death Bef 1329  Scotland Find all individuals with events at this location 
    Person ID I236731  World of Hyde
    Last Modified 29 Mar 2025 

    Father Jón Magnússon, Jarl Of Orkney And Caithness,   b. 1225, Scotland Find all individuals with events at this locationd. Bef 28 Oct 1312, Scotland Find all individuals with events at this location (Age < 87 years) 
    Family ID F67984  Group Sheet  |  Family Chart

    Children 
     1. Jarl Margaret Jónsdottir, Of Orkney - One Of The Heiresses Of The Earldom Of Caithness,   b. 1273, Inverness, Caithness, Scotland Find all individuals with events at this locationd. 1316, Tweedmuir, Peeblesshire, Scotland Find all individuals with events at this location (Age 43 years)
    Family ID F82530  Group Sheet  |  Family Chart
    Last Modified 5 Sep 2025 

  • Event Map
    Link to Google MapsBirth - Abt 1245 - Scotland Link to Google Earth
    Link to Google MapsDeath - Bef 1329 - Scotland Link to Google Earth
     = Link to Google Earth 

  • Notes 
    • Magnús Jónsson was Jarl of Orkney (covering the whole of Norðreyjar, rather than just the Orkney islands) c. 1300–1321.
      He was a signatory to the Declaration of Arbroath, which describes him as Earl of Caithness and Orkney.

      The lack of haste with which a new title was granted by the Norwegians to Orkney has led to the suggestion that Magnus Jonsson may have had an heir who was a minor, but who died before 1330. It is also likely that unravelling the genealogy of his potential successors and providing proofs of their descent was a time-consuming project. Whatever the reason, about a decade after Magnus's death the title was granted to Maol Íosa, Mormaer of Strathearn, a distant relative of Earl Gilbert. He ruled Orkney and Caithness from 1330 to 1350 and had several daughters, but no sons.