Haldir was a Marchwarden who guarded the northern borders of Lothlórien.
He had two brothers, Rúmil of Lórien and Orophin. He was also the first to greet the Fellowship when they arrived at the Golden Wood.

He showed a great deal of caution when told that there was a dwarf among the Fellowship, and would not let Gimli pass until they worked out a compromise by blindfolding everyone. However later, Haldir apologised to Gimli when he had guided the party to Caras Galadhon. After that, he returned to his brothers, then came to guide the Fellowship out of Lothlórien.

The meaning of his name is not clear, but it is either 'hidden hero' or 'tall one'. It is not mentioned when he was born, or if he had a wife. He is mentioned briefly in 'The Two Towers' when Sam speaks on the Elven rope he was carrying made of hithlain.

He does not appear in 'The Return of the King'.

[extra information by ArwenLegolas]
Encyclopedia entry originally written by Taethowen