Complex sentence: Captain Pipe likely spent his early years either at Custaloga's Town, along French Creek in Mercer County, or Custaloga's other main village, "Cussewago", at the present site of Meadville in Crawford County.
Split into simpler sentences: Captain Pipe likely spent his early years either at Custaloga's Town, along French Creek in Mercer County. He may also have lived at his uncle's other main village, "Cussewago", at the present site of Meadville in Crawford County.