As suggested on Thread:137866, the best solution to the issue of Calf's character and another by the same name also in Frozen Time is to rework this page into the concept of the aristocratic title "Lord Barset".
Talk about it here.
In 2012, Lord Barset travelled on an expedition to Antarctica, in order to find the remains of his grandfather's lost expedition in 1929. He was hoping to find a Silurian colony there, but in fact he found an ancient prison of the Ice Warriors, along with a comatose Seventh Doctor and his TARDIS. (AUDIO: Frozen Time)