Question

for whom jhon hallocks said that " he were dead"?

Answer 1

the answer is , his he said himself because he's wife
has doubt on him
she think that he is on affair with the ghost called Helen

Answer 2

for himself he said this line because his wife was doubting on him and wanted to give him divorce as she thought he was having an affair with helen the ghost. But in real there was nothing like that and on the other side helen was also angry with hallock as she told him bot to use the ouija board but he used it so thats why he said that "he were dead". i hope it help