There appear to have been two men of this name who were feuars of Killelan: Neil McEacharn of Killelan, who served on the assize for the community-wide trials held on June 9th, 20th, and 23rd, and possibly his son, Neil McEacharn "younger" of Killelan, who served on the assize of the community-wide trial held on June 14th.
Until further evidence is located, these two individuals are being treated as separate people.