Edwin \e-dwin, ed-win\ as a boy's name is pronounced ED-win. It is of Old English origin, and the meaning of Edwin is "wealthy friend". Saint Edwin (seventh century) was king of Northumbria and a martyr. Used occasionally in the 16th century, but modern use is mainly due to a 19th century revival. Astronaut Edwin "Buzz" Aldrin; Attorney General Edwin Meese III.
For more information, see also the related name Marvin.