John FitzGilbert MARSHAL , Marshal of England

  General Notes:

https://en.wikipedia.org/wiki/John_Marshal_(Marshal_of_England)
John FitzGilbert the Marshal of the Horses (c. 1105 \endash 1165) was a minor Anglo-Norman nobleman during the reign of King Stephen, and fought in the 12th century civil war on the side of Empress Matilda.

http://www.castlewales.com/jf_gilbt.html

John married Sibyl OF SALISBURY, daughter of Walter FitzEdward OF SALISBURY , Sheriff of Wiltshire and Sibyl OF CHAWORTH, about 1141.