Pedro was the son of Martín Fernández Portocarrero and Leonor Cabeza de Vaca. The date and place of his birth have not been found.
His wife was Beatriz Enríquez de Mendoza, who he married in 1423. The place has not been found. They had no known children.
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | señor de Moguer 5° | |||||
| Nobility Title | señor de Villanueva del Fresno 4° |