While it's not possible to pinpoint a specific "discoverer" for Greenland, the first European to visit and document the island is widely believed to be Erik the Red.

However, it's important to remember:

* Indigenous people: Greenland had been inhabited by the Inuit people for centuries before Erik the Red arrived. They were the true "discoverers" of the island.

* Viking exploration: While Erik the Red gets the credit, it's likely that other Vikings had visited Greenland before him.

So, while Erik the Red is credited with the first recorded European discovery, the true history of Greenland's discovery involves both the indigenous Inuit population and the earlier Viking explorers.