Catch is that The Rock is in Barony of St Trinians - tho the Barony book is highly interesting (Wm Cubbon 1st librarian of Manx Museum was fascinated by it) it does not give as clear a sequence of owners as would be found under Lords rent properties tho lists of tenants can be found for various years - it may be worthwhile looking at the various intacks associated with The Rock as these ought (doesn't mean they are tho') to be well recorded in Lib Vas + lib Assed