The Bayntun family were an influential crusading family, whose men had travelled to the Holyland with King Henry II. Temple House Farm, now sadly no longer extant, belonged to the Bayntun family and is a possible link to their crusading past. Some sources show this farm being called Templar Farm.
Before 1189, Sir Henry Bayntun was said to have been a Knight of St John of Jerusalem and held the office of Knight Marshal of the Household to King Henry II which was a post of great trust and authority in those days.
But according to the "Regesta Regum Anglo-Normannorum" the only Marshal of the King's Household was the Office of Marshal which was held by John fitz Gilbert (William Marshal's father) until 1165 when it was inherited by fitz Gilbert's oldest son John Marshal. When this John Marshal died in 1194, the office was inherited by his brother William Marshal. From the primary sources and extant records of the time period, there was no other office of 'Marshal' within the King's household.
The Knight Marshal was an officer whose duties seem to vary over the centuries, but in Henry II's time, was probably the Chief Officer of Arms and possibly charged with the arrangement of ceremonies, conduct of operations, transportation needs and other such requirements that were part of a medieval household.
There were three classes of men in the Knights Hospitalers: Knights of Justice who had to be of noble birth and already Knights and who were full time members; Chaplains who were there for the spiritual welfare of others and Serving Brothers who were laymen of ordinary birth and did the jobs of laymen within the order.
Another type of members were Donats who were not actual Knights Hospitalers they were men who only contributed funds and estates to the order. So Henry Bayntun could have been a 'donat' in the Knights Hospitalers.
Sir Henry is said to have been beheaded at Berwick and his second son, Henry, also said to have been a Knight of St. John of Jerusalem was slain in Bretague in 1201.
Sir Henry is mentioned on a memorial stone erected in 1716 for John Bayntun at the Church of St. Nicholas in Bromham. The inscription indicates that John Bayntun was the 19th in lineal descent to Sir Henry Bayntun, Knight Marshall to King Henry II. However existing records now casts serious doubt that he was a Knight Marshall at all.