What is the name of Effia's village?
Homegoing is truly a fascinating book. It was quite difficult to find the information you were searching for, and what I have discovered is that the village itself is not named. It is mentioned that Effia was born in Fanteland but that the region was divided among the larger Fante clans. It is possible that the tribe itself did not name its village and instead identified it through other means (such as who was the chief at the time). Effia and the characters around her always seem to refer to the place as just "the village," including her son Quey when he goes there as an adult.
In short, Fanteland is the closest answer that you may be able to get. I hope this is sufficient!