Isildur

[davem]

And Sauron urged the King to cut down the White Tree, Nimloth the Fair, that grew in his courts, for it was a memorial of the Eldar and of the light of Valinor.
At the first the King would not assent to this, since he believed that the fortunes of his house were bound up with the Tree, as was forespoken by Tal-Palantir. Thus in his folly he who now hated the Eldar and the Valar vainly clung to the shadow of the old allegiance of Numenor. But when Amandil heard rumour of the evil purpose of Sauron he was grieved to the heart, knowing that in the end Sauron would surely have his will. Then he spoke to Elendil and the sons of Elendil, recalling the tale of the Trees of Valinor; and Isildur said no word, but went out by night and did a deed for which he was afterwards renowned. For he passed alone in disguise to Armenelos and to the courts of the King, which were now forbidden to the Faithful; and he came to the place of the Tree, which was forbidden to all by the orders of Sauron, and the Tree was watched day and night by guards in his service. At that time Nimloth was dark and bore no bloom, for it was late in the autumn, and its winter was nigh; and Isildur passed through the guards and took from the Tree a fruit that hung upon it, and turned to go. But the guard was aroused, and he was assailed, and fought his way out, receiving many wounds; and he escaped, and because he was disguised it was not discovered who had laid hands on the Tree. But Isildur came at last hardly back to Romenna and delivered the fruit to the hands of Amandil, ere his strength failed him. Then the fruit was planted in secret, and it was blessed by Amandil; and a shoot arose from it and sprouted in the spring. But when its first leaf opened then Isildur, who had lain long and come near to death, arose and was troubled no more by his wounds.

Akallabeth

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[Snowdog]

And Sauron urged the King to cut down the White Tree, Nimloth the Fair, that grew in his courts, for it was a memorial of the Eldar and of the light of Valinor.

At the first the King would not assent to this, since he believed that the fortunes of his house were bound up with the Tree, as was forespoken by Tal-Palantir. Thus in his folly he who now hated the Eldar and the Valar vainly clung to the shadow of the old allegiance of Numenor. But when Amandil heard rumour of the evil purpose of Sauron he was grieved to the heart, knowing that in the end Sauron would surely have his will. Then he spoke to Elendil and the sons of Elendil, recalling the tale of the Trees of Valinor; and Isildur said no word, but went out by night and did a deed for which he was afterwards renowned. For he passed alone in disguise to Armenelos and to the courts of the King, which were now forbidden to the Faithful; and he came to the place of the Tree, which was forbidden to all by the orders of Sauron, and the Tree was watched day and night by guards in his service. At that time Nimloth was dark and bore no bloom, for it was late in the autumn, and its winter was nigh; and Isildur passed through the guards and took from the Tree a fruit that hung upon it, and turned to go. But the guard was aroused, and he was assailed, and fought his way out, receiving many wounds; and he escaped, and because he was disguised it was not discovered who had laid hands on the Tree. But Isildur came at last hardly back to Romenna and delivered the fruit to the hands of Amandil, ere his strength failed him. Then the fruit was planted in secret, and it was blessed by Amandil; and a shoot arose from it and sprouted in the spring. But when its first leaf opened then Isildur, who had lain long and come near to death, arose and was troubled no more by his wounds.

Akallabeth

That is the primary word on the character of Isildur. Much less is known of his brother Anarion. I think in deeds of battle Boromir was akin to Isildur in many ways. This character of Isildur is shown again when he takes up the broken sword of Elendil and takes off Sauron's finger with the ring.

[deal_with_it]

Where they show Elrond and Isildur in the Cracks of Doom and Isildur refuses to throw the Ring in. I think Elrond should have forced the issue knowing what was at stake, but did that even happen in the book? Or was that another Peter Jackson thing?

[Elu Ancalime]

ell, thats another problem with transferrence from book to movie. In the book, notably the Scroll Gandalf reads in Minas Tirith, states that Isildur took the Ring "as a token for his brother, father, and house to be an heirloom" or something. It implied he didnt want to use the Ring for its powers, I he knew about them. The movie with his "no..." makes him seem more.....gollumish.

Kuru's right. The Disaster of the Gladden Fields reveals much about the family and friendship of The House of Elendil, and it shows was not an Ar-Pharazon guy.
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Osteoporosis forums

[Tuor in Gondolin]

Silmarillion and UT Isildur is certainly a more sympathetic and
complex figure then PJ's. For general information on Isildur and
the line of kings try:
http://en.wikipedia.org/wiki/Isildur

Refering to the link Tuor of Gondolin suggested
I quote :-

Isildur settled on the east bank of the Anduin and established the city of Minas Ithil (which would later be named Minas Morgul), as well as the province of Ithilien. However, in 3428 Sauron took Minas Ithil, and Isildur fled northwest to Gil-galad and his father in Arnor, leaving Anárion to rule over Gondor.

From this text I assume that Isildur though proud and valiant of the race of Numenor was a bit like Boromir proud and arrogant , it is said that he fled to Arnor leaving behind Anaron to rule Gondor when the Witch King retook Minas Ithil .
Thus I believe Isildur was valiant but was mortally afraid of The Dark Lord .
I cannot find any record of this but from his behaviour it suggests so , But his brother Anarion was like Faramir , less arrogant but more wise .