- Skinner, R. C. (Richard Cortland), -approximately 18341
- Skrimshire, F. (Fenwick), 1774 or 1775-18551
- Smellie, William, 1740-17951
- Smith, Hugh, 1736?-17891
- Solomon, Samuel, -approximately 18181
- Stearns, Samuel, 1741-18091
- Struve, Christian August, 1767-18071