ˈæftɚ ðə wˈɔːɹ, pˈaʊɚz jˈʌŋɡɪst sˈɪstɚ, pɐtɹˈɪʃə pˈaʊɚ ɹˈoʊz, tˈɛndᵻd tʊ oʊkˈælɐhˌæn æz ɐ stˈuːdənt nˈɜːs æt wˈʊstɚz sˈeɪnt vˈɪnsənt hˈɑːspɪɾəl, wˌɛɹ hiː wʌzɐ pˈeɪʃənt.
After the war, Power's youngest sister, Patricia Power Rose, tended to O'Callahan as a student nurse at Worcester's Saint Vincent Hospital, where he was a patient.