Meaning and name origin
Lewellen \le-wellen, lewe(l)-len\ as a boy's name is of Welsh origin, and the meaning of Lewellen is "like a lion". Lewellen is a variant of Llewellyn (Welsh): also possibly, like the Welsh name Lleu, derived from the name of an ancient Celtic god, meaning "shining one".
Lewellen is not a popular first name for males but a very popular surname or last name for all people (#8635 out of 88799, Top 10%) (2000 U.S. Census).
Displayed below is a comparison of the popularity of the boy name Lewellen and its variant forms. The only popular variation form ranked in the Top 1000/100 is Llewellyn. (2014 statistics).