Philippa, 5th Countess of Ulster

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Lady Philippa de Mortimore (Plantagenet), 5th Countess of Ulster

Also Known As: "Countess of Ulster", "Philippa of Clarence"
Birthplace: Eltham Palace, Kent, England
Death: January 05, 1382 (26)
Cork, County Cork, Ireland
Place of Burial: Wigmore Abbey, Wigmore, Herefordshire, England
Immediate Family:

Daughter of Lionel of Antwerp, 1st Duke of Clarence and Lady Elizabeth de Burgh, 4th Countess of Ulster
Wife of Edmund de Mortimer, Sr., 3rd Earl of March
Mother of Elizabeth Mortimer, Baroness Camoys; Roger de Mortimer, 4th Earl of March; Philippa Poynings; Sir Edmund Mortimer, Jr.; Lady Joan Mortimer and 3 others

Managed by: Anne Brannen
Last Updated:

About Philippa, 5th Countess of Ulster

other possible death dates years

5 January 1380

5 January 1381


a short summary from Wikipedia :

Philippa of Clarence

Countess of Ulster (suo jure)

Predecessor Elizabeth de Burgh and Lionel of Antwerp

Successor Edmund Mortimer

Spouse Edmund Mortimer, 3rd Earl of March

m. c. 1368; dec. 1381


Lady Elizabeth Mortimer, Baroness Camoys

Roger Mortimer, 4th Earl of March

Lady Philippa de Mortimer, Countess of Pembroke, Countess of Arundel

Sir Edmund Mortimer

Sir John de Mortimer

House House of Plantagenet (by birth)

Mortimer family (by marriage)

Father Lionel of Antwerp, 1st Duke of Clarence

Mother Elizabeth de Burgh, Countess of Ulster

Born 16 August 1355(1355-08-16)

Eltham Palace, Kent

Died 5 January 1382 (aged 26)

Cork, Ireland

Burial Wigmore, Herefordshire


Links:,_5th_Countess_of_... (which gives different death dates )


Citations / Sources:

[S4] #11232 The Genealogist (1980-), Association for the Promotion of Scholarship in Genealogy, (New York: Organization for the Promotion of Scholarship in Genealogy, 1980-), FHL book 929.105 G286n., vol. 24 no. 1 p. 123

[S11] Alison Weir, Britain's Royal Families: The Complete Genealogy (London, U.K.: The Bodley Head, 1999), page 95. Hereinafter cited as Britain's Royal Families.

[S26] #374 The Lineage and Ancestry of H. R. H. Prince Charles, Prince of Wales (1977), Paget, Gerald, (2 volumes. Baltimore: Geneal. Pub., 1977), FHL book Q 942 D22pg., vol. 1 p. 21.

[S27] #849 Burke's Guide to the Royal Family (1973), (London: Burke's Peerage, c1973), FHl book 942 D22bgr., p. 199.

[S29] #798 The Wallop Family and Their Ancestry, Watney, Vernon James, (4 volumes. Oxford: John Johnson, 1928), FHL book Q 929.242 W159w; FHL microfilm 1696491 items 6-9., vol. 3 p. 570.

[S34] #4712 Some Early English Pedigrees: Combined from Most Available Sources 1958-1968, Norr, Vernon M., (Arlington, Va.: [s.n.], 1968), FHL book 942 D2no; FHL microfilm 897,045 item 2., p. 82.

[S35] #240 Collins's Peerage of England, Genealogical, Biographical, and Historical, Greatly Augmented, and Continued to the Present Time (1812), Brydges, Sir Egerton,, (9 volumes. London: [T. Bensley], 1812), FHL book 942 D22be., vol. 2 p. 272.

[S45] #673 The New England Historical and Genealogical Register (1846-), (Boston, Massachusetts: New England Historic Genealogical Society, 1846-), FHL book 974 B2ne; CD-ROM No 33 Parts 1-9; See FHL catalog for microfilm numbers., vol. 108 p. 176.

[S49] #2058 The American Genealogist (1932-1965), Jacobus, Donald Lines, (32 volumes in 11. New Haven: D. L. Jacobus, 1932-1965), FHL book 973 B2aga, D25aga., vol. 69 p. 137.

[S53] A History of the County of Gloucester: Vol. VII, Edited by N. M. Herbert, (Published for The Institute of Historical Research by Oxford University Press), vol. 7 p. 143.

[S55] Journal of British Studies, (The University of Chicago Press), FHL Book 942 H25j., "Edward III and His Family", vol. 26 no. 4 p. 398.

”Memorials of an ancient house : a history of the family of Lister or Lyster.” Author: Denny, Henry Lyttelton Lyster, 1878-. Page 125. Archive.Org

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Philippa, 5th Countess of Ulster's Timeline

August 16, 1355
Eltham Palace, Kent, England
February 12, 1371
Usk, Monmouthshire, Wales
Usk, Monmouthshire, Wales
April 11, 1374
Usk, Monmouthshire, Wales
November 21, 1375
Ludlow, Shropshire, England, United Kingdom
November 9, 1376
Ludlow Castle, Shropshire, England
Wigmore, Kent, England
January 5, 1382
Age 26
Cork, County Cork, Ireland