Afonso was the son of unknown parents. The date and place of his birth have not been found.
His wife is not known. They were married, but the date and place have not been found. Their five known children were Gonzalo Betótiz (?-?), Teodo Betótiz (?-?), Tetón Betótiz (?-?), Aragunte Betótiz (?-?) and Tello Betótiz (?-?).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | conde de Tuy y de Deza |