Here's a thread for the (many) bastard children of Plantagenet monarchs, including those of Henry II's father Geoffrey.
Geoffrey of Anjou's Bastardsby Adelaide of Angers:
1. Hameline de Warenne (1129-1202). He married Isabella de Warenne, who had previously been married to King Stephen's son William, and was made Earl of Surrey. In Sharon Penman's books, he's depicted as being close to Henry II - does anyone know if this is true?
by unknown mothers:
2. Mary, Abbess of Shaftesbury (died c.1216)
3. Emma. She married Guy, Sire de Laval, and secondly David ap Owen, Prince of East Gwynnedd.
Henry II's Bastardsby a woman called Ikenai:
1. Geoffrey, Archbishop of York (1151-1212).
2. William Longespee, Earl of Salisbury (died 1226). He married the daughter of William Fitzpatrick, Earl of Salisbury. Does anyone know if he was close to his half-siblings? Was it one of them who made him an earl, or was it Henry?
3. Peter.
by Alix of France, daughter of Eleanor of Aquitaine and Louis VII of France, at the time betrothed to the future Richard I:
4, 5, 6 and 7. Various children who died young. How did Eleanor feel about this liason???
by Nesta:
8. Morgan, Bishop of Durham.
by Alice de Porhoet:
9. Child, nothing much known.
by unknown mothers:
10. Matilda, Abbess of Barking.
11. Hugh of Wells, Bishop of Lincoln.
12. Richard.
Richard I's Bastardsby Joan de St Pol:
1. Fulk.
by an unknown mother:
2. Philip, Lord of Cognac. Perhaps married Amelia of Cognac.
King John's Bastardsby a woman called Suzanne, possibly a sister of the Earl of Surrey:
1. Richard Fitzjohn, Baron of Chilham (died 1242/53). He married Rohese of Dover.
by Clementina, wife of Henry Pinel:
2. Joan (died 1237). She married Llwelyn ap Iorweth, Prince of Wales. She's the subject of Penman's novel 'Here Be Dragons' and Barbara Erskine's novel 'Child of the Phoenix' is about her daughter Eleyne.
by Hawise:
3. Oliver (died 1290).
by unknown mothers:
4. Osbert Gifford.
5. Geoffrey Fitzroy (died 1205).
6. John Fitzjohn (died 1242).
7. Odo or Eudo Fitzroy.
8. Henry.
9. Richard, Constable of Wallingford Castle.
10. Matilda, Abbess of Barkin.
11. Isabella.