Ruth 2:6

‘ And the servant who was set over the reapers answered and said, “It is the Moabitish damsel who came back with Naomi out of the country of Moab.”

The overseer demonstrated that he was fulfilling his duties, and informed Boaz that it was the Moabitish young woman who had come back from Moab with Naomi. It would appear that Ruth's loyalty was well known in the town. The overseer may not, however, have known her family history, and that she was related to Boaz by marriage.