Minohtar

"Minohtar was  King Ondoher's sister-son and was captain of the Right Wing of the northorn army of Gondor" Tolkien Gateway: Minohtar. Menohatr was a descendant of Anarion, son of Elendil.

History

In T.A. 1944 when the armies of King Ondoher went out to meet the wain-riders, Minohtar was given command of the Right-Wing. The Right-Wing was to follow the king and his body guards to Morannon. However the wain-riders sent their calvary  to strike the main army, which the Kind was leading, however the King's army was annihlated, leading Minohatr to rally the remaining troops. Unfortunately Minohatr was one of the casualties of the battle and was slain by a wain-riders arrow. His corpse was then carried away with the rear-guard when the battle was lost.

Had Minohtar lived though, it is possible that he would have became king, as the throne was eventually granted to the victorious general Earnil, who's son, Earnur, foolish got himself killed and thus ended the line of Anarion as is recorded.

Rumors
However, it is rumored that an anonymous author is attempting to purchase the rights to write a story that takes place in middle earth, with a descendant of Minohatr as a charachter. However this is just a rumor, and is unlikley that the deal will happen knowing Christopher Toklien's stance on his fathers work.