This was the description of the shrine room in the stern hallway. The books are normal devotional items.The shrine is in the form an angel figure with spread wings. The marbled is cracked and defaced, one chunk of wing in broken pieces on the floor. Interestingly the weapon soikes gave the residue of marble dust on them.
The Iberians tend to worship through prayers to saints or divine figures. So an angel depiction or perhaps a saint with wings is not uncommon. The stained glass window shows a swan in reeds mosaic. Several hymn books and religious calendars are scattered about. Most damp with mold and torn but you can find a fair condition one amongst the tomes.
The vellum, actually Zoggrot mentioned he was suddenly very hungry and discreetly ate the vellum from the portrait.
The gold tooth has been examined. Detect Magic showed the rune etched in it had a charm or persuasive aura about it. Anyone in need of a dental implant (sorry Goldie already gas a full set), could bite on it. (What would Ruby from Lock, Stock and Barrel give Rexlin for it?).
Toad room papers, three spell scrolls and lots of neat or bizarre artistic drawings. Ships manifest, cargo notes, quatermasters store notes and cooks cannibal menu are other ordinary papers collected.
Parchment of skin: reputedly made from human skin. Crew slit palms and imprinted bloody hands on it. A comment from Cuadrado was it wrapped itself around the Captain afterwards like swaddling clothes. Captains body is hanging from mast again but previously his skeleton showed no sign of a parchment or bandages wrapped around him.Chief inferred that his people are withheld from entering their heavens which assumes the skin parchment somehow binds them also
Hope that fills any gaps.