William McDonald
The McDonald family arrived in New York on 6 July 1866 via the ship Arkwright. The Thompson company records show that William's father Edward purchased 6 1/2 adult food rations for the overland journey, which would be consistent with the traveling group on the ship, which consisted of 2 parents, and 8 children, about 5 of whom would need either no food rations or only 1/2 of an adult portion.
Memoranda book 2 indicates that a "W. McDonald" left the company at O'Fallon's Bluff. If this is in reference to William, it is possible he moved to another company to work as a teamster.
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William McDonald (1847 - 1904) Profile