It means "baker". Seriously. For a good portion of European history, people didn't have what we would think of as "family" or "last" names. Most people had surnames that said who their father or an ancestor was ("Anderson"= "Andrew's son", "Peterson"= "Peter's son", etc.), where they were from or what their family did. The last name "Smith" means your ancestors were blacksmiths. "Cooper" means your ancestors were barrel-makers. "Thatcher" means your ancestors made straw roofs. And "Baker" means your ancestors made bread.
Jeri Baker's birth name is Jeri Baker.
Link Baker's birth name is Lincoln Baker.
Friend Baker's birth name is Friend Frederick Baker.
Baker Karim's birth name is Abu-Baker Karim.
Ashok Baker's birth name is Ashok Shahin Baker.
Brydon Baker's birth name is Brydon Bertram Baker.
Carlee Baker's birth name is Carlee Ren Baker.
Dusty Baker's birth name is Baker, Johnnie B..
Ewen Baker's birth name is Ewen Edward Baker.
G Baker's birth name is Gregory Lamar Baker.
Joby Baker's birth name is Joseph N. Baker.
Lynn Baker's birth name is Lynn Sandra Baker.