TA 861
From the One Wiki to Rule Them All, the Lord of the Rings Encyclopedia.
- Death of Eärendur, Tenth King of Arnor
- Following Eärendur's death, the kingdom of Arnor breaks up into Arthedain, Cardolan, and Rhudaur
- Amlaith became the Firsth King of Arthedain, and Eleventh King of Arnor
