θˈoːɹnbɜːɡz fˈɑːðɚ, ɐ pɹˈɑːmɪnənt jˈuːniənˌɪst, wʌz ɚɹˈɛstᵻd baɪ kənfˈɛdɚɹət ɐθˈɔːɹɪɾiz dˈʊɹɹɪŋ ðə wˈɔːɹ ænd dˈaɪd ɪn ɐ kənfˈɛdɚɹət pɹˈɪzən ɪn dʒˈɔːɹdʒə.
Thornburgh's father, a prominent Unionist, was arrested by Confederate authorities during the war and died in a Confederate prison in Georgia.