Ann MASON lived in Sutton Cheney, Leicestershire which is 2.5 miles from Shenton where her daughter lived with Thomas MILES.
She left all whole estate in Sutton Cheney to Mary HARRISON her granddaughter with the exception of 1 shilling left to her grandson Thomas MILES, although as Thomas' father had given him his entire estate perhaps this was evening things up. Ann made several provisions to ensure that all the property, income and rights belonged to Mary HARRISON and that neither Mary's husband or anyone else could control the assets once inherited.
Other clues:
The most promising baptism record for Ann's daughter Anne is on
27 Apr 1680 St Martin, Leicester by Richard and Ann MASON, however the are plenty of other possible records in Leicestershire or Warwickshire.
The 1719 poll book lists the 18 voters living in Sutton Charnel alias Cheny, one of which is Thomas MASON. Thomas' freeholding, from which his voters rights came, from Dadlington which is 2 miles from Sutton Cheney and 2 miles from Shenton. Is this the widow Ann's husband?
A possible marriage is 1678 in Burton Hastings, Warwickshire (6 miles from Dadlington) between Thomas Mason and Anne Mayne daughter of Henry Mayne. I couldn't find any baptisms for this couple.