It helps to identify a tree and serves the purpose of making a tree more personal to relate to. Trees have also been individually named in different cultures. This is especially true of landmark trees that were used as markers for travelers because of their size and location.
Tree climbers name their trees with different reasons in mind.
It might be after someone they know or revere. The name might be mythical in nature or from its location. Or it might be named from its shape or resemblance to something in nature. The first person to make the ascent is asked to perform the naming ceremony though the team of climbers might elect to make a joint decision in addressing the tree's name. Some of the names include McKrutchen, Lucinda, Aerial, Nimrod, and Dianna.