select.surname.list

It could be Stephens, it could be Stevens - being "son of Stephen" and "son of Steven," a personal name from the Greek Stephanos meaning "crown."  It was a popular name in the early Middle Ages, having been borne by the first Christian martyr.

Select Stevens/Stephens Resources on The Internet

• Stephens/Stevens.  Stephens/Stevens ancestry and US family genealogy.
• Stevengraphs.  Stevens in Coventry.
• My Ancestors' Story.  Stevens from England to New Zealand.
• The Stevens Family.  Stevens in Louisiana.
• Stephens/Stevens Family DNA Testing.  DNA results.

England.  In England, the first record of the name Stephens was found in Gloucestershire where they were descended from Fitz Stephens who came over with William the Conqueror.  Stephens has remained very much a west country surname, with a particularly high concentration in Cornwall.  Stevens, by contrast, has been a name of London and the southeast.  There were two Stevens families in Berkshire, at Cullum and Bradfield, with the same coats of arms.

America.  Early arrivals in America included both Stephens and Stevens.  Overall the numbers today are slightly larger than in the UK and include Stevens who had originally come from Holland or Germany, as well as an Americanized form of some like-sounding Jewish names. 

Edwin Stevens from a prominent New Jersey family was an early 19th century American engineer and inventor who left a bequest which founded the Stevens Institute of Technology.
John Lloyd Stephens was a 19th century American explorer and diplomat who played a prominent role in the rediscovery of Mayan civilization and the planning of the Panama railroad.