Andrew Verney
From Tardis Wiki, the free Doctor Who reference
Andrew Verney was the maternal grandfather of Tegan Jovanka. He was living in the village of Little Hodcombe in England in 1984. (TV: The Awakening)
He was the uncle of Tegan's aunt, Vanessa (TV: Logopolis, PROSE: Divided Loyalties)
His daughter, Tegan's mother, was still alive in 2006. (AUDIO: The Gathering)
