"Giridhara" literally means Holder of the Mountain.
When Shri Krishna wanted to break the ego of Indra, Shri Krishna lifted Govardhan mountain on his finger. After this He was given the name Giridhara - the one who holds a mountain.
In the Ramayana, when Ravana's son Indrajit hurls a powerful weapon at Lakshmana, Lakshmana is badly wounded and is nearly killed by Indrajit. Hanuman was called upon to fetch Sanjivani buti from Himalayas. After reaching the mountain, Hanuman unable to identify the herb lifted the entire Dronagiri mountain and brought it to the battlefield. Hanumaan too lifted the mountain Dronagiri.
When Krishna lifted mountain Govardhana, He is called GiriDhara. But why is not Hanumaan called GiriDhara? Or are there any references calling Him GiriDhara- Holder of Mountain?