Costanza was the daughter of unknown parents. The date and place of her birth have not been found.
She died in 1480 in Guimaraes.
Her husband was Affonso I de Portugal, who she married in 1420 in Sintra. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Death | 1480 |
|
Note 1
dau.of Alfonso de Castilla, Cde de Gijon y Noronha