Which discoverer,working for France,died eaten while still fresh,under the eyes of his brother?

Let me rephrase this.

Whose explorer,working for France, died eaten up by cannibals, under the eyes of his brother?

Giovanni da Verrazzano

'In 1528 he again crossed the Atlantic (exploration and the cutting of logwood being the joint goals of the expedition), landing in Florida, then following the chain of the lesser Antilles. On one of the islands (probably Guadeloupe) his habit of anchoring away from the shore became fatal. Giovanni was going ashore in a boat to greet the natives, wading the last part while the boat, with his brother, remained at sea. Unfortunately, the natives were not a friendly tribe that wanted to trade, but cannibalistic Caribs. They expertly killed Giovanni and ate him while still fresh, under the eyes of his brother. The ship was too far away to give gunfire support.'

That's right Jenny. source

Great question and great title, Mozart !