Richard de Thornhill de Wath
Richard was born in 1150 in Thornhill, Yorkshire, England.  He died at the age of 58 in 1208.

 Alice of Yorkshire
Alice was born in 1154 in England.  She died at the age of 50 in 1204.

 John Thornhill
John was born in 1180 in Thornhill, Yorkshire, England.  He died at the age of 69 in 1249.