"Finnacán" meaning in Old Irish

{
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "finn",
        "3": "acán",
        "gloss1": "fair, blond"
      },
      "expansion": "finn (“fair, blond”) + -acán",
      "name": "suffix"
    }
  ],
  "etymology_text": "finn (“fair, blond”) + -acán",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "Finnacán",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "Ḟinnacán",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "Finnacán",
      "source": "mutation"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "proper noun",
        "3": "gentive",
        "4": "Finnacáin",
        "g": "m"
      },
      "expansion": "Finnacán m (gentive Finnacáin)",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Old Irish given names",
          "parents": [
            "Given names",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Old Irish male given names",
          "parents": [
            "Male given names",
            "Given names",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Irish terms suffixed with -acán",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a male given name, Anglicized as Finnegan"
      ],
      "id": "en-Finnacán-sga-name-n~nA4cxD",
      "links": [
        [
          "given name",
          "given name"
        ],
        [
          "Finnegan",
          "Finnegan"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈɸʲin͈aɡaːn]"
    }
  ],
  "word": "Finnacán"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "finn",
        "3": "acán",
        "gloss1": "fair, blond"
      },
      "expansion": "finn (“fair, blond”) + -acán",
      "name": "suffix"
    }
  ],
  "etymology_text": "finn (“fair, blond”) + -acán",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "Finnacán",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "Ḟinnacán",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "Finnacán",
      "source": "mutation"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "proper noun",
        "3": "gentive",
        "4": "Finnacáin",
        "g": "m"
      },
      "expansion": "Finnacán m (gentive Finnacáin)",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Old Irish entries with incorrect language header",
        "Old Irish given names",
        "Old Irish lemmas",
        "Old Irish male given names",
        "Old Irish masculine nouns",
        "Old Irish proper nouns",
        "Old Irish terms suffixed with -acán",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "a male given name, Anglicized as Finnegan"
      ],
      "links": [
        [
          "given name",
          "given name"
        ],
        [
          "Finnegan",
          "Finnegan"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈɸʲin͈aɡaːn]"
    }
  ],
  "word": "Finnacán"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: gentive Finnacáin",
  "path": [
    "Finnacán"
  ],
  "section": "Old Irish",
  "subsection": "proper noun",
  "title": "Finnacán",
  "trace": ""
}

{
  "called_from": "inflection/865",
  "msg": "inflection table: IF WITHOUT ELSE EVALS False: Finnacán/Old Irish 'radical' base_tags=set()",
  "path": [
    "Finnacán"
  ],
  "section": "Old Irish",
  "subsection": "proper noun",
  "title": "Finnacán",
  "trace": ""
}

{
  "called_from": "inflection/735",
  "msg": "inflection table: unrecognized header: 'lenition'",
  "path": [
    "Finnacán"
  ],
  "section": "Old Irish",
  "subsection": "proper noun",
  "title": "Finnacán",
  "trace": ""
}

{
  "called_from": "inflection/735",
  "msg": "inflection table: unrecognized header: 'nasalization'",
  "path": [
    "Finnacán"
  ],
  "section": "Old Irish",
  "subsection": "proper noun",
  "title": "Finnacán",
  "trace": ""
}

{
  "called_from": "inflection/1826",
  "msg": "inflection table: empty tags for Finnacán",
  "path": [
    "Finnacán"
  ],
  "section": "Old Irish",
  "subsection": "proper noun",
  "title": "Finnacán",
  "trace": ""
}