He is only referred to Andrew in one story, and its not even his first appearance or real name
Talk about it here.
By wormhole, Alex ended up in 19th century Hexford, where he began to be known as Andrew and beceame the ward of Dobbs. He liked to explore the village of Hexford after dark. He wore a mask to hide his true appearance. He was in fact the heir of the Robotov Empire. (AUDIO: The Broken Crown)
After The Doctor returned him to the Robotov Empire, he became the Tsar. Because of his connection to the Skishtari egg, he stopped Lucius' plans to use the creature inside to take over the Robotov Empire. (AUDIO: Survivors in Space)