Short answers, pulled from the story.
Jean Goujon was a French Renaissance sculptor and architect born around 1510, probably in Normandy. He served as sculptor to King Henry II of France from 1547 and created some of the most celebrated works of Mannerism in France, including the caryatids and facade allegories at the Louvre and the nymphs of the Fountain of the Innocents in Paris.
Jean Goujon's most famous works include the six nymphs of the Fountain of the Innocents (1547-1550), the caryatids for the musician's platform in the Louvre (1550-1551), allegories on the Louvre facade in the Cour Carrée (1549), and the sculptural decorations on the western extension of the Louvre completed with architect Pierre Lescot between 1555 and 1562.
Jean Goujon left France in 1562 for religious reasons. He was a Huguenot, and the outbreak of the French Wars of Religion forced him into exile. He is last documented in 1563 in Bologna, where he was recorded as a member of a group of Huguenot refugees.
Jean Goujon's primary collaborator was the architect Pierre Lescot. The two men worked together at the church of Saint-Germain-l'Auxerrois around 1544 and later on the sculptural decorations for the western extension of the Louvre from 1555 to 1562. Lescot also designed the Fountain of the Innocents that Goujon decorated with six nymphs.
Jean Goujon's earliest documented work was at the church of Saint-Maclou in Rouen. He also worked at Rouen Cathedral in 1541-42, where he executed a monument to Louis de Brézé, seigneur d'Anet.
The Fountain of Diana (Diana with a Stag), dating to around 1549 and designed for Diane de Poitiers at the Château d'Anet, was long attributed to Goujon or his workshop. Scholars now consider it more likely to have been the work of Germain Pilon.