Benin Empire
The fourth West African flag (see here) held by the Greenwich Royal Museums is described by the museum as being, it too, of probably Itsikiri origins; the flag in question is often referred to as the putative Flag of the Benin Empire, and in the early digital era has attracted curiosity because of its unusual imagery, depicting a decapitation. There is, however, some uncertainty as to whether the flag is indeed at all related to the Benin Empire, or if it, like the other three, belonged to an Itsekiri ship loyal to Nana Olomu.