however , another piece of data occurred to him : that all the early thurmond male deaths had occurred to bloodline thurmond fathers : this data piece combined with the thurmond storage room -- a storage room containing mementos of thurmond males who had deceased early -- caused zachary to theorize that when thecmrnegative male children at grey cliff had not successfully blended with theircmrpositive peers , that they may have been murdered by their own families and that even if their fathers had not been present that they would have at least been accomplices .