Olórin is often considered Gandalf's true name. It's the title associated with his true form: the Maia of Valinor. Maia are angel-like shapeshifters, and before coming to Middle-earth in the form ...

Unlike Saruman and Radagast, Gandalf did not have ... he often took the form of an elderly beggar or vagabond. He did so both to hide his true identity and to benefit from the generosity of ...