Nielsen Hayden genealogy
Ancestors of Nest ferch Gruffydd
1057 - ┌── Seisyll
┌── Llywelyn ap Seisyll, King of Deheubarth (Abt 980 - 1023)(m. 994)
│ └── Prawst
│
┌── Gruffydd ap Llywelyn, King of Wales ( - 5 Aug 1064 Ireland)(m. Abt 1057)
│ │
│ │ ┌── Hywell Dda ap Cadell, King of South Wales (Abt 875 - 950) =>
│ │ ┌── Owain ap Hywel Dda, King of Deheubarth ( - 988)
│ │ │ └── Elen ferch Llywarch ( - 929) =>
│ │ │
│ │ ┌── Maredudd ap Owain ( - 999)
│ └── Angharad ferch Maredudd (m. 994)
│
Nest ferch Gruffydd (Between 1055 and 1057 - ??)
│
│ ┌── Leofwine of Mercia ( - Bef 1032)
│ ┌── Leofric of Mercia ( - 31 Aug 1057 Bromley, Staffordshire, England)(m. Bef 1030)
│ ┌── Ælfgar of Mercia (Bef 1031 - Abt 1062)
│ │ └── Godgifu (Abt 1010 - Abt 1067)(m. Bef 1030)
│ │
└── Ealdgyth of Mercia, Queen Consort of England ( - Aft 1066)(m. Abt 1057)
└── Ælfgifu