Simplify the following text for a Grade 10 native English-speaking person.
Original: Many family names are derived from Stephen : the most common are Stephens\/Stevens and Stephenson\/Stevenson ( others include Stephen , Stephan , Staphan , Stefan , Stevin and Stever ) .
Simplified: Many family names come from Stephen : the most common are Stephens\/Stevens and Stephenson\/Stevenson ( others include Stephen , Stephan , Stefan , Stevin , and Stever ) .