He was the elder son of Isaac Astley, 2nd Baron Astley of Reading and his wife Anne Stydolfe, fourth daughter of Sir Francis Stydolfe.
[1] Astley was educated at St John's College, Cambridge.
[3][4] He married his cousin Frances Stydolfe, daughter of Sir Richard Stydolfe, 1st Baronet.
Astley died at St Margaret's Church in Westminster and was buried in Maidstone in Kent.
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