Amandil

Amandil was the leader of the Faithful Numenoreans, and came to be the eighteenth and last LORD OF ANDUNIE. His life as Lord of Andúnië and as one of the Faithful and the two sons he sired the HIGH KING OF GONDOR and HIGH KING OF ARNOR who preserved their ways through the Dúnedain of Middle-earth on up to ARAGON II Elessar.  ELENDIL the Tall was his son, and ISULDUR his grandson.
In youth, Amandil had great friendship with PHARAZON who was a relative of his father's mother, INZILBETH.  When Pharazôn married TAR-MIRIEL and he took the Sceptre of Númenor he had become corrupted by his father's counsel and Pharazôn and Amandil became estranged. Amandil, who was the leader of the Faithful in Númenor though not openly, supported the old traditions of friendship with the Elves and reverence for the Valar, whereas Pharazôn followed the way of the KING'S MEN and that of his own will. Pharazôn deprived the Lords of Andúnië of their lordship due to their support of the old King TAR-PALANTIR and he commanded Amandil to dwell in ROMENNA. Andúnië he took and made it the chief harbour of the royal ships but he did not dismiss Amandil from his council or in any other way molest him.
In SA 3261, Pharazôn brought Sauron (who was disguised) to NUMENOR, and over the years became deceived by Sauron's lies.
Eventually sensing the impending doom of Númenor, Amandil urged his son Elendil not to interfere in the upcoming war, but to expect and prepare for a forced departure from the island. He himself decided to set sail for VALINOR, there to plead with the Valar for forgiveness and mercy for the Númenórean people, since at least a few had remained faithful.
He departed into the West either SA 3310 or SA 3316, just before the GREAT ARMAMENT was ready to launch, in an attempt to reach Valinor and save Númenor. He set sail in a small ship with three servants dear to him (though no names are given for them) at night from Rómenna steering east, as if his goal to reach Middle-earth, but soon he turned and journeyed into the west. He never returned, and was not heard from again.
Whether Amandil's voyage was successful is unknown, but soon after the destruction of Númenor, a great wave carried Elendil's ships safely to Middle-earth, suggesting that his pleas were indeed heard.