Juan was born about 1310, the son of unknown parents. The place is not known.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Urraca Mendez (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1310 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | comendador de Estepa |