Member Information
| Full Name | ♀️ Agnes de St. John -  |
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| Birth | #1 | Date of Birth | ABT 1279 |
| Place of Birth | Basing, Hampshire, England | ||
| Father | John I "Sir Knight - Keeper of Portchester Castle" de St. John | ||
| Mother | Alice FitzPiers-FitzReynold | ||
| Siblings | ♂️ Edward I St. John, ♂️ John II "Sir Knight - 1st Lord St. John of Basing" St. John | ||
| Death | #1 | Date of death | ABT 1340 |
| Place of death | Exeter, Devonshire, England | ||