Genealogy of the Marshall Family,
including Medieval and Ancient Lines

Updated: 09-30-2024.

Submitted and Maintained by Bill Marshall, bill.marshall@verizon.net.


Additions and corrections appreciated (especially with sources). My current list of sources is here. Homepage here.

Index of Medieval and Ancient Lines is here, notable people here, and Gedcom available to be downloaded.

Index of Modern Lines (immigrants to America and their descendants) is here, notable people here, and Gedcom here.


Individual Page

    Person Info
  • Name: Sibyl
  • Sex: F


    • Parents:

Family:
Marriage: Children:
  1. Isabel AVERNAL
  2. Gervase AVENAL Death: 1219

Bibliography
  1. Ravilious, John, Ancestry of Sir John de Graham of Dalkeith. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 6/11/2007. Subject: Ancestry of Sir John de Graham of Dalkeith (d. 1337). Available at https://groups.google.com/g/soc.genealogy.medieval/c/BE4ZK_aw3OQ/m/tWZrhFLWg88J. Author address: Therav3 at aol dot com. Information from this source tagged as [Ref: John Ravilious SGM 6/11/2007-142226].
  2. Ravilious, John, Avenel of Eskdale. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 6/11/2007. Subject: Savage of Stainsby, and Avenel of Eskdale: a Ferrers descent ?. Available at https://groups.google.com/g/soc.genealogy.medieval/c/zA7Qf98jWR0/m/yGNcpLpTgZUJ. Author address: Therav3 at aol dot com. Information from this source tagged as [Ref: John Ravilious SGM 6/11/2007-173233].
  3. Weis, Frederick L, Magna Charta Sureties 1215: The Barons Named in the Magna Charta and Some of Their Descendants. 4th Ed. Baltimore: Gen Pub Co, 1991. Information from this source tagged as [Ref: Weis MC #[0-9][0-9]*].

Sources with Information about marriage to Robert AVENAL
names:
[Ref: John Ravilious SGM 6/11/2007-142226]
Richard AVENAL & Sibyl ___ [Ref: Weis MC #116],
child:
[Ref: John Ravilious SGM 6/11/2007-173233, Weis MC #116]
Research Notes:



Pedigree of Sibyl
Sibyl



Descendants of Sibyl
1. Sibyl m. Robert AVENAL
m. Robert AVENAL

2nd generation

2. Isabel AVERNAL m. William The Lion King Of Scots
m. William The Lion King Of Scots father: Henry Of Huntingdon, Earl Of Huntingdon mother: Ada De WARENNE
3. Gervase AVENAL m. Sibyl
m. Sibyl

3rd generation

4. Isabel Of Scotland m1. Robert De BRUS m2. Robert De ROS, Magna Charta Surety
m. Robert De BRUS father: Robert De BRUS, Lord Of Annandale mother: Euphemia
m. Robert De ROS, Magna Charta Surety father: Everhard De ROS, Baron Of Helmsley mother: Roysia TRUSSEBUT
5. Roger AVENEL m.

4th generation

6. Sir William De ROS, Baron Of Helmsley m. Lucia FITZ PIERS
m. Lucia FITZ PIERS father: Piers FITZ HERBERT mother: Alice De WARKWORTH
7. Sir Robert De ROS, Baron Of Wark m.
8. (Unk) AVENEL m. Sir Henry GRAHAM
m. Sir Henry GRAHAM father: Sir Henry De GRAHAM mother: Christiana FITZ GILBERT

5th generation

9. Sir Robert De ROS, Baron Of Helmsley m. Isabel D'ALBINI
m. Isabel D'ALBINI father: William D'ALBINI, Baron Of Belvoir mother: Isabel
11. Sir William De ROS m. Eustache FITZ HUGH
m. Eustache FITZ HUGH father: Ralph FITZ HUGH mother: Joan De La HAYE
15. Lucy De ROS m. William De KYME, Baron Of Sotby
m. William De KYME, Baron Of Sotby father: Philip De KYME, Baron Of Sotby mother: Agnes WALEY
16. Alicia De ROOS m1. Sir John The Red COMYN m2. Sir James De BYRON
m. Sir John The Red COMYN father: Richard COMYN
m. Sir James De BYRON father: Sir Richard De BYRON
17. Isabel De ROS m1. Roger De MERLAY, Baron Of Morpeth m2. Sir Adam De EVERINGHAM
m. Roger De MERLAY, Baron Of Morpeth father: Roger De MERLAY, Baron Of Morpeth mother: Ada MACDUFF
m. Sir Adam De EVERINGHAM father: Robert De EVERINGHAM mother: Isabel De BIRKIN
18. Ida De ROS m1. Roger III BERTRAM, Baron Of Mitford m2. Sir Robert De NEVILLE m3. John FITZMARMADUKE
m. Roger III BERTRAM, Baron Of Mitford father: Roger II BERTRAM, Baron Of Mitford mother: Agnes
m. Sir Robert De NEVILLE father: Geoffrey FITZ ROBERT De NEVILL mother: Joan
m. John FITZMARMADUKE father: Marmaduke FITZ GEOFFREY
19. William De ROS m. Christian BERTRAM
m. Christian BERTRAM father: Roger II BERTRAM, Baron Of Mitford mother: Agnes
20. Sir Robert De ROS, Baron Of Wark m. Margaret De BRUS
m. Margaret De BRUS father: Peter II De BRUS, Baron Of Skelton mother: Hawise De LANCASTER
21. Idonea GRAHAM m. Sir Adam De SWINEBURN
m. Sir Adam De SWINEBURN
22. Sir Nicholas GRAHAM m. Mary Of Strathearn
m. Mary Of Strathearn father: Malise Earl Of Strathern mother: Marjory De MUSCHAMP