| Birth: | ABT 1740 in England |
| Death: | ABT 1789 in Berwick, St. Mary Parish, Louisiana |
| Sex: | M |
| Father: | |
| Mother: | |
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Fact 1: 17 JUN 1789 in Opelousas, St. Landry Parish, Louisiana Succession No. 4
Occupation: Louisiana Surveyor
| Mary A. O'Bryan (Wife) |
| Children: | |
 Mary Angelica Berwick b. 14 OCT 1769 in St. Martin Parish, Louisiana
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| Eleanore Helena Birgitta Wallace (Wife) b. 14 AUG 1748 in Dublin, Ireland |
| Marriage: 14 AUG 1768 in Charlestown, South Carolina |
| Children: | |
- Thomas Berwick, Jr. b. 14 JAN 1771 in New Orleans, Orleans Parish, Louisiana
- Martha Agnes Berwick b. 15 FEB 1778 in Opelousas, St. Landry Parish, Louisiana
- Eleanore Wallace Berwick b. 28 SEP 1778 in St. Landry Parish, Louisiana
 Joseph Berwick b. 19 MAR 1783 in St. Martin Parish, Louisiana
- Marguerite Rebecca Berwick b. 11 MAY 1786 in St. Martinville, St. Martin Parish, Louisiana
- Anne Dawson Berwick b. 22 NOV 1788 in St. Martinville, St. Martin Parish, Louisiana
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