Awon iwadii mi fihan pe awon awon Kristeni ni Guinea-Bissau may to laarin eniyan marun-un ninu ogorun-un si eniyan metala ninu ogorun-un awon eniyan orile ede naa.. 
Òun ni èyí tí ó tóbi jù tí a sì kọ́kọ́ ṣẹ̀dá nínú àwọn ìomuye tí ó wà lálà ìtọ́jú Ghana Museums and Monuments Board (gMB).Wọn sí *'kì náà kalẹ̀ ní ọjọ́ karùn-ún Oṣù Kẹta ọdún 1957 gẹ́gẹ́ bí ara ayẹyẹ ìgbòmìnira Ghana.. 