What is "twifo-heman"

Twifo is one of the states established by the Akan when they first settled in the Adansi forest. Later the Akan kept migrating southward toward the coast, where they took over considerable area. By the beginning of the 16th century, European sources noted the state of Twifo, said to be rich in gold; they described it as near the forest area with a capital known as Hemang. These Akan brought their gold to the coastal area to sell and were known by the Europeans by variant names because they brought the finest gold. The people also became known as Twifo.