The subject is continued briefly on folio 66 verso opposite (D04076). This study presumably relates to the historical subjects on which Turner was working around the turn of the century. It is possibly connected with the oil painting Dolbadern Castle, North Wales (Royal Academy of Arts, London)1 where in the foreground two figures seated on the ground and apparently bound and guarded by two soldiers. See folios 107 recto, 108 recto, 111 recto and 112 recto (D04124, D04125, D04128, D04129; Turner Bequest LXIX 108, 109, 112, 113) for studies of the general composition of that work.
Martin Butlin and Evelyn Joll, The Paintings of J.M.W. Turner, revised ed., New Haven and London 1984, pp.9–10 no.12, pl.7 (colour).