Baron of Forteviot John de Lyon & Margery de Oakley 
They had a son named John.
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Personal Details
Baron of Forteviot John de Lyon
John was born about 1272 in Forteviot, Perthshire, Scotland.1 He died in 1312 in Norwich, Norfolk, England.1
Margery de Oakley
Margery was born about 1275 in Great Oakley, Northamptonshire, England.1 Margery is no longer alive.
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Children
Sir John de Lyon
John was born about 1289 in Norwich, Norfolk, England.1 He died in 1362 in Warkworth, Banbury, Northamptonshire, England.1