Individual Page

Person Info

Name: Katherine De St CLAIR
Sex: F
Death: After 28 Mar 1450 ^d

Parents:

Father:
Sir John SINCLAIR Birth: Abt 1345 Death: Before 20 Jan 1401/2

Mother:

Elizabeth POLWARCH

Family:
Marriage:

Sir John SETON, Lord Of Seton on Before 8 Mar 1392/3 .^m1
Sir John SETON, Lord Of Seton Birth: 1 Death: Before 1434

Children:

Sir William SETON Death: 17 Aug 1424 in Verneuil
Janet SETON
Christian SETON

Bibliography

Burke, Sir John Bernard, Genealogical and Heraldic History of the Peerage Baronetage and Knightage. 99th edition. London: Burke's Peerage, 1949. Available at http://archive.org/details/burkesgenealogic1949unse. Information from this source tagged as [Ref: Burke Peerage [cx0-9]*].
Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 06 Gordon-Huntley. London: St Catherine Press, 1926. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/271412 Information from this source tagged as [Ref: CP VI [Ap][p0-9].*].
Cokayne, George Edward, Complete Peerage of England, Scotland, Ireland, Great Britain, and the United Kingdom, extant, extinct, or dormant, vol 11, Ridley-Sinclair. London: St Catherine Press, 1949. Reprinted (4 per page) Gloucester: A Sutton, 1982. Available at https://familysearch.org/search/catalog/27141 Information from this source tagged as [Ref: CP XI [Ap][p0-9].*].
Ravilious, John, George Dunbar, earl of March. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 3/7/2007. Subject: George Dunbar, earl of March. Available at https://groups.google.com/g/soc.genealogy.medieval/c/0T5fp9DryyA/m/f4XlydVoTkgJ. Author address: Therav3 at aol dot com. Information from this source tagged as [Ref: John Ravilious SGM 3/7/2007-080037].
Ravilious, John, Stewart, Earl of Galloway. Posting to soc.genealogy.medieval (email list GEN-MEDIEVAL) on 4/27/2005. Subject: SP Correction: Ancestry of Stewart, Earl of Galloway. Available at https://groups.google.com/g/soc.genealogy.medieval/c/bYXhgAwGE4w/m/hTQ4a2Y-9_8J. Author address: Therav3 at aol dot com. Information from this source tagged as [Ref: John Ravilious SGM 4/27/2005-211251].
Paul, Sir James Balfour, Scots Peerage: founded on Wood's edition of Sir Robert Douglas's peerage of Scotland; containing an historical and genealogical account of the nobility of that Kingdom. Edinburgh: David Douglas, 1904. NYPL ARO (Scots Peerage) (too fragile to copy). Available at https://familysearch.org/search/catalog/216265. Information from this source tagged as [Ref: SP VIII p[0-9]*].
Thompson, Neil D, and Hansen, Charles M, Medieval Heritage: The Ancestry of Charles II, King of England, The Genealogist, 2:157-68, 3:25-44, 3:175-94, 4:144-58, 5:64-72, 5:226-39, 6:100-3, 6:148-65, 7-8:137-43, 9:40-4, 10:73-85, 11:63-72, 11:184-93, 12:83-90, 12:250-6, 13:92-9, 13:252-6, 14:81-4, 14:207-10, 15:99-103, 15:220-4, 16:93-8, 16:227-31, 17:61-4, 17:250-5, 18:123-7, 18:228-31, 19:62-8, 19:251-5, 20:85-8, 20:184-90, 21:71-5, 21:250-4, 22:101-6, 22:186-91, 23:73-9, 23:203-8, 24:110-27, 24:239-54, 25:56-73, 25:214-32, 26:77-101, 26:202-26, 27:189, 28:90, 33:300. NYPL APA 82-1000. Available at https://www.americanancestors.org/databases/genealogist-the/image/. Reprinted, with further corrections, as Thompson, Neil D, and Hansen, Charles M, The Ancestry of Charles II, King of England: A Medieval Heritage. Saline, Michigan: McNaughton & Gunn, 2012. NYPL ARF 13-5787. Information from this source tagged as [Ref: Thompson CharlesII v[0-9]*-[0-9]*].

Sources for birth and parent Information

parents:: [Ref: Thompson CharlesII v12-85],
brother:: (not daughter of) Sir William SINCLAIR [Ref: Thompson CharlesII v12-85(14)]

Sources with Inaccurate birth and parent Information

father:: Sir William SINCLAIR of Herdmanston (#184583) [Ref: Burke Peerage p687, CP XI p633, SP VIII p574]

Sources for death Information

date:: living 28 Mar 1450 [Ref: Burke Peerage p687, CP XI p633, SP VIII p574, Thompson CharlesII v06-100]

Sources with Information about marriage to Sir John SETON, Lord Of Seton

date:: before 8 Mar 1392/3 [Ref: SP VIII p573, Thompson CharlesII v06-100],
child:: [Ref: Burke Peerage p687, CP VI p99, CP XI p633, John Ravilious SGM 3/7/2007-080037, SP VIII p574]

Sources with Inaccurate marriage information

child:: Catherine (#147694) wife of Alan STEWART [Ref: John Ravilious SGM 4/27/2005-211251, Thompson CharlesII v06-100]

Research Notes:
of Herdmanston [Ref: Thompson CharlesII v06-100]

chronology requires that she be the sister of William Sinclair, rather than a daughter as suggested at SP VIII p573-4 [Ref: Thompson CharlesII v12-85(14)]

28 Mar 1450: King James II confirmed a charter of her grandson George, Lord Seton, dated 20 Jun 1449 [Ref: Thompson CharlesII v06-100(9)]

Pedigree of Katherine De St CLAIR
                                                       /-----Henry De St CLAIR
                                              /-----Alan De St CLAIR
                                     /-----John De St CLAIR
                                    |        |                  /-----William FITZ WALTER, Baron Of Eton
                                    |        |         /-----Alexander De WYNDESORE
                                    |        |        |         \-----Anna
                                    |         \-----Matilda De WYNDESORE
                                    |                 |         /-----William I De LANCASTER, Baron Of Kendal
                                    |                  \-----Agnes De LANCASTER
                                    |                           \-----Gundred De WARENNE, Countess Of Warwick
                            /-----John De St CLAIR
                   /-----William De St CLAIR
          /-----Sir John SINCLAIR
/-----Sir John SINCLAIR
|        |                                    /-----Robert De St CLARE
|        |                           /-----Sir William SINCLAIR
|        |                          |        |                  /-----Robert I Count Of Dreux
|        |                          |        |         /-----Robert II Count Of Dreux
|        |                          |        |        |         \-----Agnes De Baudemont
|        |                          |         \-----Eleanor Of Dreux
|        |                          |                 |         /-----Ralph I Sire De COUCY
|        |                          |                  \-----Yolande De COUCY
|        |                          |                           \-----Agnes Of Hainault
|        |                  /-----Sir Henry SINCLAIR
|        |                 |        |                           /-----Ferteth Earl Of Strathern
|        |                 |        |                  /-----Gilbert Earl Of Strathern
|        |                 |        |                 |         \-----Ethen
|        |                 |        |         /-----Robert Earl Of Strathern
|        |                 |        |        |        |         /-----Roger IV De TOENI, Baron Of Flamstead
|        |                 |        |        |         \-----Margaret De TOSNY
|        |                 |        |        |                  \-----Constance De BEAUMONT
|        |                 |         \-----Amicia
|        |                 |                 |                  /-----William FRESKIN
|        |                 |                 |         /-----Hugh De MORAVIA
|        |                 |                  \-----(Unk dau) De MORAVIA
|        |                 |                          |         /-----Duncan MACDUFF, Earl Of Fife, Justiciar Of Scot
|        |                 |                           \-----Annabela Of Fife
|        |                 |                                    \-----Ela
|        |         /-----Sir William SINCLAIR
|        |        |        |         /-----William De FENTON
|        |        |         \-----Alice De FENTON
|        |        |                 |         /-----John BYSET
|        |        |                  \-----Cecilia BYSET
|        |        |                          |                  /-----Thomas DURWARD
|        |        |                          |         /-----Sir Alan DURWARD
|        |        |                          |        |         \-----(Unk) of Atholl
|        |        |                           \-----(Unk) DURWARD
|        |        |                                   |         /-----Alexander II King Of Scots
|        |        |                                    \-----Marjorie
|         \-----Margaret SINCLAIR
Katherine De St CLAIR
|         /-----Sir Patrick POLWARTH
\-----Elizabeth POLWARCH

Descendants of Katherine De St CLAIR

1. Katherine De St CLAIR m. Sir John SETON, Lord Of Seton

m. Sir John SETON, Lord Of Seton father: Sir William SETON mother: Janet FLEMING

2+ Sir William SETON m. Janet DUNBAR

3+ Janet SETON m. Robert KEITH, Master Of Keith

4+ Christian SETON m. Sir Norman De LESLIE

2nd generation

2. Sir William SETON m. Janet DUNBAR

m. Janet DUNBAR father: Sir George DUNBAR, Earl Of March Or Dunbar mother: Beatrice

5+ George SETON, Lord Seton m1. Margaret STEWART m2. Christian MURRAY

6+ Catherine SETON m1. Alan STUART, Seigneur Of Aubigny m2. Sir Herbert MAXWELL, Lord Maxwell

7+ Janet SETON m1. John HALYBURTON, Lord Dirletoun m2. Edward CONGALTON

8+ Margaret SETON m1. Thomas DUNBAR, Earl Of Moray m2. Sir John OGILVY