Thank you Matthew. It looks as if the land and buildings in this case were all tenanted, so perhaps Matthew Carleton and John Weston were going to jointly manage the tenancies for Henry. I think I'll go down to the East Sussex Record Office and take a look at the original documents to see if there are any clues. I'm very grateful, however, for your pointing out that the nature of the trusteeship need not (and almost certainly was not) of the type common today.