::I don't know much about his biography and there is no exact messurement for calling someone to be from another place but there is a new question: Do you say because he met them he had been in Tous. the vice versa is more possible. Ghazali and Nizamul Mulk Tusi have been in Neyshabur for a while. I have read it for Ghazali before. He studied in  Nizamiya in Neyshabur.