Philip Aston, 6th Lord Aston of Forfar, was probably born at his ancestral seat of Millwich in Staffordshire, England.
In 1751, he succeeded his distant cousin James Aston, 5th Lord Aston of Forfar, as Lord Aston of Forfar in the peerage of Scotland.
He died unmarried just four years later, in 1755, when he was succeeded by his younger brother Walter Aston, 7th Lord Aston of Forfar.