The history of Girard-Perregaux starts in the 18th century when, in 1791, Jean-François Bautte creates a manufacturing company in Geneva
The history of Vacheron Constantin starts in the 18th century. Vacheron Constantin was founded in 1775 by Jean-Marc Vacheron (1731–1805)
The history of Patek Philippe starts in the 19th century with the Polish watchmaker Antoni Patek, who first founded another watch company