|Also Known As:||"Sibylla Marshall"|
|Birthplace:||Pembroke, Pembrokeshire, Wales|
|Death:||Died in Pembrokeshire, Wales|
Daughter of John Marshall and Aline Marshall
|Managed by:||Private User|
About Sybil Marshall
Stirnet identifies her only as "Sybil", no family name attached. The line of John, older brother of William (the) Marshal, is relatively poorly documented.