 
| Père | Date de naissance | Mère | Date de naissance | 
|---|---|---|---|
|  JOHN I Fitzroy Plantagenet HP01 WC01 | 24/12/1166 |  Isabel ILLIGITIMATE HP02 (alternative) (Fitzroy Plantagenet) | 
| Conjoint | Date de naissance | Enfants | 
|---|---|---|
|  RICHARD de Montfort HP02 LU01 | 1230 |  ISABEL FitzRichard HP02 LU01 | 
| The following information comes from Vivian's Visitations of Cornwall. p. 30: Richard Heligan (d. 1326) was the son of Belym Heligan (d. 1312) by Isabel (d. 1313), daughter of Richard Fitz Yva whose mother Isabel "le Blanche") was an illegitimate daughter of King John of England. p. 30: Richard Heligan married Margaret (d. 1302), daughter of Sir Roger Prideaux, and had daughter and coheir Isabella, who married John Petyt and had son John. p. 31: Isabel (d. 1344), daughter and heir of Richard "Hellegon," married (1) John Petit and married (2) John Trevarthian, by whom she had daughter Maria, who married Stephen Mathaderva. p. 528: Sibill, daughter and heir of Richard Helegan, married Peter Kemyell, son of Henry Kemyell, and had son Peter who married Felice, daughter of Sir John Arundell. Peter and Felice had daughter Alice Kemyell who married Ralph Vyvion of Trevidron. p. 437: Elizabeth, daughter and heir of Peter Kemyell of Clowance, married Geoffrey St. Aubyn. | 
| Description | Référence/Commentaire | Qualité | Information | Preuve | 
|---|---|---|---|---|
|  Copy of Isabell, da. of King John; John L. Vivian  The Visitations of Cornwall | Originale | Seconde main | Directe | 
| Date | Âge | Événement | Catégorie | 
|---|