No. There were others before him.
Leif Ericson.
Yes. He was a Viking explorer.
Leif Ericson, the Viking explorer.
No. He was a Viking explorer.
He was a Viking explorer, and the first European to land in North America.
That is the usual Anglicized spelling of "Leif Ericson" (Leif Eiriksson Viking explorer, 970-1020 AD).
Leif Ericson.
No. He was known as an explorer, not a warrior.
Leif Ericson was a Viking explorer, who became the first European to land in North America.
Erik the Red was a Viking explorer who discovered Greenland. Leif Ericson was his son, who was the first European to discover North America.
Lief Ericson
Leif Ericson.