Tar-Alcarin, rightful King of Númenor, does not rule
Meaning: The Glorious
Event Type: Political
Age: 2nd Age - Rings
For the first 20 years of the reign that was rightfully his, the rule was usurped by his father: "Herucalmo took the sceptre upon his wife's death, calling himself Tar-Anducal, and withholding the rule from his son Alcarin; some do not reckon him in the Line of Kings as seventeenth, and pass to Alcarin."
Tolkien lists Tar-Alcarin as the seventeeth, and notes he was rightful king for 100 years, although he ruled only for 80. The date used here reflects the full 100.
Unfinished Tales, Part 2, Ch III, The Line of Elros: Kings of Numenor