Thomas St Aubyn (c.1578–1637) was an English politician.
He was the son of Thomas St Aubyn of Clowance in Cornwall and studied at Queen's College, Oxford. [1]
He was elected the MP for St Ives in the Parliament of 1601 alongside Thomas Barton and MP for Grampound in the Addled Parliament (1614). [1] He was High Sheriff of Cornwall in 1546. [2]
He married Mary, the daughter of Sir Thomas Grenvile of Stow and was succeeded by his son John.
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