No mention of Donald or Neil Ban in Petitions & Land Grants but there is in Father John's Brevity and I assume you have the following:
MacDonald, Niel ban 18-Dec-1839, Lancaster-7, Lot 14 "...from Niel ban McDhoil ic____? Jen Lan 7c N14 pro of 1838 for '39 by his son Archibald, k4 bu wheat, 2 1/2 bu peas, 6 bu oats."[This appears to be another Niel ban or Father was repeating his contibution from last winter?]
MacDonald, Niel Ban 02-Jul-1840, Lancaster-7, Lot 14, "mac Dhoil ic Jen , 7 oats, 5 wheat, 2 1/2 peas, some oats to come yet."  son of Donald, of John
MacDonald, Niel Ban - same date and contribution as above - mac Dhoil ic Join  Lan 7, N14 for dues of 1837." Said Oats were brought here before winter.
 Neil, son of Donald, son of Hugh, son of John