ðə θˈɜːd sˈɪstɚʃˌiən mˈɑːnɐstɚɹi ˌɔn dʒˈɜːmən tˈɛɹɪtˌoːɹi wʌz fˈaʊndᵻd baɪ ɐdˈɛlheɪd ʌv lˈɛɹ lˈoʊɹə, wˈaɪf ʌv kˈaʊnt vˈɑːlkmɚɹ ʌv klˈɛtənbˌɜːɡ, ˌʌndɚ ðə fˈɜːst ˈæbət hˈɛnɹi aɪ wˈʌn θˈaʊzənd wˈʌnhˈʌndɹɪd twˈɛnti sˈɛvən twˈɛnti ˈeɪt; ðə faʊndˈeɪʃən wʌz bˈækt baɪ kˈɪŋ lˈɑːɾaɪɚ ɹˌoʊmən θɹˈiː ænd kənfˈɜːmd ɪn wˈʌn θˈaʊzənd wˈʌnhˈʌndɹɪd θˈɜːɾi sˈɛvən baɪ pˈoʊp ˈɪnəsənt ɹˌoʊmən tˈuː.
The third Cistercian monastery on German territory was founded by Adelheid of Lare (Lohra), wife of Count Volkmar of Klettenberg, under the first abbot Henry I (1127–28); the foundation was backed by King Lothair III and confirmed in 1137 by Pope Innocent II.