original: the name is thought to be derived from greta river in cumberland , england .
simplifications: the name is thought to come from greta river in cumberland , england . the name is thought to come from greta river in cumberland . the name probably comes from the greta river in cumberland , england . the name is derived from the greta river in cumberland , england . the name is thought to have come from greta river in cumberland , england . the name is thought to come from the greta river in cumberland , england . the name -lrb- greta -rrb- is thought to be taken from the greta river in cumberland , england . the name is thought to be comes from greta river in cumberland , england .