bˈɔːldwɪn wʌz bˈɔːɹn nˌɪɹ tʃˈɛstɚ, vɜːmˈɔnt, ˌɔn ˈeɪpɹəl twˈɛlv, wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd θˈɜːɾi ˈeɪt, ænd mˈuːvd wɪð hɪz pˈɛɹənts tʊ ˈɑːʃkɑːʃ, wɪskˈɑːnsɪn tˈɛɹɪtˌoːɹi, ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi sˈɛvən.
Baldwin was born near Chester, Vermont, on April 12, 1838, and moved with his parents to Oshkosh, Wisconsin Territory, in 1847.