mˈɜːfɛldən wʌz fˈɜːst mˈɛnʃənd ɪnðə "lˈoːɹʃɚ ɹˈaɪxsɚbˌɑːɹ" ʌv ˈeɪthˈʌndɹɪd θˈɜːɾi tʊ ˈeɪthˈʌndɹɪd fˈɪfti ˌʌndɚ ðə nˈeɪm "mˈɜːsənˌuːɔlt".
Mörfelden was first mentioned in the "Lorscher Reichsurbar" of 830 to 850 under the name "Mersenualt".