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3rd Lord Percy of Alnwick Henry Percy III & Princess Mary of Lancaster Plantagenet

They had two sons and a daughter, named Henry, Thomas and Mary.

Personal Details
- 3rd Lord Percy of Alnwick Henry Percy III
  Henry was born in 1321.¹
  - Birth Notes
    - B: Bet. 1320 and 1322
  He died at the age of 47 on June 17th, 1368.¹
  Princess Mary of Lancaster Plantagenet
  Mary was born in 1320 in Tutbury Castle, Staffordshire, England.¹
  - Birth Notes
    - B: 1320/21
  She died at the age of 42 on September 1st, 1362.¹

Children
- 1st Earl of Northumberland Henry Percy
  Henry was born on November 10th, 1341 in Castle Raby, England.¹ He died due to Battle of Bramham Moor at the age of 66 on February 29th, 1408 in Bramham Moor.¹
  Thomas Percy
  Thomas was born in 1344.²
  - Birth Notes
    
    B: Abt. 1344
  Mary Percy

Family Timeline

¹ http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I5750&style=TABLE
² http://wc.rootsweb.com/cgi-bin/igm.cgi?op=GET&db=jdp-fam&id=I6169