"Jehanne" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Prénoms féminins en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "lang": "Français",
      "lang_code": "fr",
      "word": "Jeanne"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "Jean"
    },
    {
      "lang": "Gaélique irlandais",
      "lang_code": "ga",
      "word": "Siobhán"
    }
  ],
  "etymology_texts": [
    "Forme féminine de Jehan."
  ],
  "forms": [
    {
      "form": "Jehan",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "masculine"
      ]
    }
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "name",
  "pos_title": "Prénom",
  "related": [
    {
      "word": "Jehan"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Prénom féminin devenu Jeanne."
      ],
      "id": "fr-Jehanne-fro-name-ZjB4D7zb"
    }
  ],
  "sounds": [
    {
      "ipa": "\\ʒə.ɑn\\"
    }
  ],
  "tags": [
    "feminine",
    "first name"
  ],
  "word": "Jehanne"
}

{
  "categories": [
    "Prénoms féminins en ancien français",
    "ancien français"
  ],
  "derived": [
    {
      "lang": "Français",
      "lang_code": "fr",
      "word": "Jeanne"
    },
    {
      "lang": "Anglais",
      "lang_code": "en",
      "word": "Jean"
    },
    {
      "lang": "Gaélique irlandais",
      "lang_code": "ga",
      "word": "Siobhán"
    }
  ],
  "etymology_texts": [
    "Forme féminine de Jehan."
  ],
  "forms": [
    {
      "form": "Jehan",
      "source": "form line template 'équiv-pour'",
      "tags": [
        "masculine"
      ]
    }
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "name",
  "pos_title": "Prénom",
  "related": [
    {
      "word": "Jehan"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Prénom féminin devenu Jeanne."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ʒə.ɑn\\"
    }
  ],
  "tags": [
    "feminine",
    "first name"
  ],
  "word": "Jehanne"
}