Ismay was born about 1390 in Castleknock castle, Dublin, Dublin, Eire, the daughter of unknown parents.
Her husband was Nicholas Barnewall. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1390 |
|
Note 1
Daughter of Sir John Serjeant and Emeline NN