1340 - 1407  (67 years) 
  
	
Generation: 1
  
 
Generation: 2
  
| 3.   | Sibilla was born in 1316 in England. 
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Generation: 3
  
  
 
Generation: 4
  
  
 
Generation: 5
  
| 17.   | Joan GerardChildren: 
- 8. Robert de Heydon was born in 1260 in Woodbury, Devonshire, England; died in 1323 in Woodbury, Devonshire, England. 
 
 
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Generation: 6
  
| 33.   | Isabel MoreChildren: 
- 16. John de Heydon was born in 1244 in Heydon, Norfork, England; died in 1294 in Heydon, Norfork, England. 
 
- William de Heydon, Jr. was born in 1246 in Heydon, Norfork, England; died in 1307 in Heydon, Norfork, England. 
 
 
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Generation: 7
  
  
 
Generation: 8
  
| 129.   | Mrs. Hidden was born about 1161 in Northumberland, England. Children: 
- 64. Thomas de Heydon, Jr. was born in 1185 in Heydon, Norfork, England; died in 1250 in Heydon, Norfork, England. 
 
 
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