Ozzy, considering the age of that structure, a full structural analysis should be performed, either by an expert framing contractor or engineer/architect.
It appears that some of the sheathing boards were cut to indicate a dormer installation and that would explain the plumb cut extreme on a few rafters in the last picture.
More pictures would be helpful, but in any case, there is a problem there that has to have been magnified elsewhere in the structure, ie., lack of rafter ties causing exterior walls to open in the outward position.
Dips in the roof and/or sags, to much weight from roof coverings.
Further evaluation is definitely required. There is failure of structural members in these photos and needs to be address by someone qualified in structural framing.