- /
- Celtic calendar /
- 3rd /
- March 20 /
- March 20, 1780
The Firm of James Watt and Co Was Established to Manufacture the Worlds First Duplicating Machines.
← Previous
Miles Byrne, United Irishman, is born in Monaseed, Co. Wexford
Next →
Alexander Mitchell, civil engineer and inventor, is born in Dublin