Naptali was the son of Jacob and Rachel's maidservant Bilhah and the father of the tribe of Naphtali, one of the twelve tribes of Israel. The tribe of Naphtali settled in northern Canaan and were described as brave soldiers in the Song of Deborah (Judges 5:18). Naphtali's blessing from his father called him "a running deer" (Genesis 49:21). Naphtali was given his name because Rachel said "With great wrestlings have I wrestled my sister" (Genesis 30:8).
Sources: Bridger, David. Ed. The New Jewish Encyclopedia, NY: Behrman House, 1976; Navigating the Bible II