Ronnel Arryn (King)

"And the Arryn boy king yielded the Vale in return for a ride on the beast."

- Petyr Baelish

Ronnel Arryn is an unseen character in Game of Thrones. He is deceased when the events of the series begin. He was a the last King of Mountain and Vale.

Background
King Ronnel Arryn was only a child during the War of Conquest, with his mother, Queen Sharra Arryn ruling the Vale as Regent. When Visenya Targaryen flew to the Eyrie demanding submission, Ronnel bent the knee to Aegon the Conqueror and surrendered the Kingdom of the Mountain and the Vale in exchange for a ride atop Vhagar.

In the books
In the A Song of Ice and Fire novels, it was Queen Sharra who surrendered the Kingdom when she found Ronnel sitting on Visenya's lap, both atop Vhagar, and he asked her if he could ride the dragon.