At that point the developing town was known as '' Cockrill 's Hill '' and remained so until 1857 when the townspeople applied for a post office permit and changed the name of the town to '' Milton '' ( the name of Cockrill 's son ) .
At that point the developing town was known as '' Cockrill 's Hill '' . 
 Until 1857 , when the townspeople applied for a post office permit , and changing the name of the town to '' Milton '' ( the name of Cockrill 's son ) .