He was probably the John Bennet who sued the Prior of the Order of Hospitallers at Kilmainham for debt in 1453.
The de Snyterby (or Sueterby) family were natives of Snitterby in Lincolnshire, and also had strong Irish connections: Reginald was the third member of the family to hold high judicial office in Ireland.
John and Joanna had at least one son Thomas, who married Elizabeth Bellew.
The profits from the lands were to be used to pay for four choristers (professional singers), to sing at divine services for the repose of the souls of Thomas, his wife, and his parents.
John's widow Joanna was still alive in 1484, when she, like her son previously, made a grant of lands in County Dublin to the Prior of Holy Trinity Cathedral.