http://fmg.ac/Projects/MedLands/ENGLISH%20NOBILITY%20MEDIEVAL1.htm#_Toc188245705

JOHN "the Marshal" ([1144/45]-Mar 1194, bur Bradenstoke) m. as her first husband, JOAN de Port, daughter of ADAM de Port Lord of Basing & his first wife Mabile d´Orval (-[1204/13]). She married secondly, as his second wife, Richard de Rivers. Mistress (1): ALICE, daughter of ---. John the Marshal had [one illegitimate son by Mistress (1)]:

i) [JOHN Marshall (-1235). King John confirmed "Cantelee et Castree…que fuerunt Hugonis de Gornaco" to "Johanni Marescall nepoti W. Maresc com de Penbroc" by charter dated 11 Nov 1204[1263].]