In 1601, the twelth year of Argeleb's reigh, many hobbits migrate from Bree so Argeleb granted them the land beyond the Baranduin to dwell in. These hobbits were joined in The Shire by Stoors from Dunland in c. 1630. Prior to this, the area of the Shire was unpopulated and was regarded at the king's hunting ground.
In 1636 the Great Plague devastated Gondor (the King, his children and the White Tree perished) and moved north to the lands of Argeleb's rule. Although the Great Plague decreased in severity as it moved north, there was still much suffereding throughout Arnor: most of the people of Cardolan perished (especially those living in Minhiriath) including the Cardolan's last prince. The last prince was burried in the Barrow-downs (in the same mound as Frodo was caught in), and it was also at about this time that evil-spirits from Angmar started to dwell in the Barrow-downs.
After having ruled for eighty-one years, he was succeeded by his son Arvegil upon his death in 1670.
Argeleb's name is Sindarin for "Silver King" from ar meaning "royal", and celeb (becoming lenited to geleb) meaning "silver". It is likely that Argeleb II was named after his great-grandfarther, Argeleb I
|10th King of Arthedain