Answer:
Lief Erikson was born to Erik the Red and Thjodhild around 970 CE, in Iceland.
Leif Ericson had two brothers, Thorvald and Thorsteinn, and one sister, FreydĂs. He married a woman named Thorgunna, and they had one son, Thorkell Leifsson
He discovered North America around the year 1000 CE.
More information can be found here: http://en.wikipedia.org/wiki/Leif_Ericson