Mary de Percy

1367 - 1394  (27 years)

• Name	Mary de Percy
  Birth	12 Mar 1367  [3, 4]
  Estate Admin	11 Feb 1393/94 (26 years)  [2]
  On 11 February 1393/94 dower was assigned her as a widow under writs.
  Death	25 Aug 1394	York, Yorkshire, England   [3, 4]
  Burial	Aft 25 Aug 1394	Rievaulx Abbey, Yorkshire, England Rievaulx Abbey, Yorkshire, England   [2]
  Patriarch & Matriarch	Mainier, Count of Sens, Duke of Austria   d. 800  (16 x Great Grandfather)  Joan Orreby   d. Jul 1369  (Mother)
  Person ID, Branch	I24334
  Last Modified	9 Jul 2025

  
  

  Father	Sir Henry de Percy, Lord Percy,   b. Between 1322 and 1325, Seamer, Yorkshire, England d. 18 May 1368 (Age 46 years)
  Mother	Joan Orreby   d. Jul 1369
  Family ID	F7912	Group Sheet  |  Family Chart

  
  

  Spouse / Partner	Sir John de Ros of Helmsley, KB, Lord Ros,   b. Abt 1368, Helmsley, Yorkshire, England d. 6 Aug 1393, Paphos, Cyprus (Age 25 years)
  Marriage	Before 22 Jun 1385  [1, 2, 3, 4]
  Age at Marriage	She : 18 years and 3 months - He : ~ 17 years and 6 months.
  Children	They had no children.  [1, 3, 4]
  Family ID	F8657	Group Sheet  |  Family Chart
  Last Modified	20 Aug 2021

  
  

• Pedigree

  ← Click to display 1Mary de Percy(1367 – 1394) 2Sir Henry de Percy, Lord Percy(1325 – 1368) 4Sir Henry de Percy, KG, Lord Percy(1300 – 1351) 8Sir Henry de Percy, Lord Percy(1273 – 1314) 16Sir Henry de Percy, Baron of Topcliffe(Abt 1235 – 1272) 17Eleanor de Warenne(1251 – ) 9Eleanor de Arundel( – 1328) 18Sir Richard FitzAlan, Earl of Arundel(3 Feb 1266/67 – 9 Mar 1301/02) 19Alisona de Saluzza( – 1292) 5Idonea de Clifford( – 1365) 10Sir Robert de Clifford, Lord Clifford(1274 – 1314) 20Roger de Clifford(1243 – 1282) 21Isabel de Vipount, Lady of Appleby(1254 – 1292) 11Maud de Clare( – 1 Feb 1324/25) 22Sir Thomas de Clare, Lord of Thomond(Abt 1245 – 1287/88) 23Juliane FitzMaurice( – 1300) 3Joan Orreby( – 1369) 6 12 24 25 13 26 27 7 14 28 29 15 30 31

  
  

• Event Map		Death - 25 Aug 1394 - York, Yorkshire, England Burial - Aft 25 Aug 1394 - Rievaulx Abbey, Yorkshire, England  = Link to Google Earth
  Pin Legend	: Address       : Location       : City/Town       : County/Shire       : State/Province       : Country       : Not Set

  
  

• Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠 Tertiary Evidence 🔴 Unreliable Evidence

  [S11] Burke, Bernard, A Genealogical History of the Dormant, Abeyant, Forfeited, and Extinct Peerages of the British Empire , (London: Harrision, 1866). [S1705] Cokayne, George E. and Geoffrey H. White. The Complete Peerage, Second Edition, Volume 11 (Rickerton to Sisonby), (London: The St. Catherine Press, 1949). [S1569] Lundy, Darryl. The Peerage web site, (Wellington, New Zealand: http://www.thepeerage.com/index.htm, 2019). [S304] Wikipedia, John Ros, 5th Baron Ros.