Family:
Marriage:
                Children:
- Isabel GREY  Birth: Abt 1377
- Alice GREY  Birth: Abt 1382
Bibliography
- 
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].*].
- 
Richardson, Douglas, Royal Ancestry. Salt Lake City, Utah: Douglas Richardson, 2013. NYPL JFF 16-1184 v1-5 Information from this source tagged as [Ref: Richardson RoyalAnc v3p[0-9]*].
- date: 
- age 12 in 1366 [Ref: CP VI p168(a)],
- parents: 
- [Ref: CP VI p168]
Sources for death Information
- date: 
- [Ref: CP VI p168]
Sources with Information about marriage to Emma
- child: 
- [Ref: CP VI p168]
Research Notes:
heir of his father [Ref: CP VI p168]
assumed the surname of GREY [Ref: CP VI p168]
  
Pedigree of John GREY
          /-----
Henry HILLARY
 /-----
Sir Edward HILLARY
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Roger MARMION, Baron Of Tamworth
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Robert MARMION, Baron Of Tamworth
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(Unk Dau) De ARBITOT
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Robert MARMION, Baron Of Tamworth
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Gervais Count Of Rethel
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Milicent Of Rethel
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Elizabeth Of Namur
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Robert MARMION, Baron Of Tamworth
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Elizabeth  
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Robert MARMION, Baron Of Tamworth
|        |                 |         \-----
Maud De BEAUCHAMP
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Philip MARMION, Baron Of Tamworth
|        |        |        |         /-----
Phillip De VASSY
|        |        |         \-----
Julianne De VASSY
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Joan MARMION
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Mary  
John GREY
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Henry De GREY
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Hawise De GRAY
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Sir William De GREY
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Iseude De BARDOLF
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(Unk Dau) BARDOLF
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Sir Richard De GREY
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William De GREY
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Lucy  
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Richard De GREY
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Joan  
|         /-----
Sir William De GREY
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Felicia  
 \-----
Alice De GREY
  Descendants of John GREY
2nd generation 
3rd generation 
4th generation 
5th generation