"syððan" meaning in Old English

{
  "head_templates": [
    {
      "args": {
        "1": "ang",
        "2": "conjunction"
      },
      "expansion": "syððan",
      "name": "head"
    }
  ],
  "lang": "Old English",
  "lang_code": "ang",
  "pos": "conj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "siþþan"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Old English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Oft did Scyld the son of Scéf tear the mead-thrones away from the hosts of his foes, from many tribes; the earl terrified them, after he first was found an out-cast.",
          "ref": "c. 975–1025, Beowulf (Cotton MS Vitellius A XV), published 4th quarter 10th century–2nd half 16th century, page 132r, lines 4–6:",
          "roman": "oft scyld scefing sceaþen[a] þreatum monegū mægþum meodo setla of teah egsode eorl syððan ærest wearð fea sceaft funden",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of siþþan"
      ],
      "id": "en-syððan-ang-conj-fcvXUaVV",
      "links": [
        [
          "siþþan",
          "siþþan#Old_English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "syððan"
}

{
  "head_templates": [
    {
      "args": {
        "1": "ang",
        "2": "conjunction"
      },
      "expansion": "syððan",
      "name": "head"
    }
  ],
  "lang": "Old English",
  "lang_code": "ang",
  "pos": "conj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "siþþan"
        }
      ],
      "categories": [
        "Old English conjunctions",
        "Old English entries with incorrect language header",
        "Old English lemmas",
        "Pages with 1 entry",
        "Requests for native script in Old English quotations"
      ],
      "examples": [
        {
          "english": "Oft did Scyld the son of Scéf tear the mead-thrones away from the hosts of his foes, from many tribes; the earl terrified them, after he first was found an out-cast.",
          "ref": "c. 975–1025, Beowulf (Cotton MS Vitellius A XV), published 4th quarter 10th century–2nd half 16th century, page 132r, lines 4–6:",
          "roman": "oft scyld scefing sceaþen[a] þreatum monegū mægþum meodo setla of teah egsode eorl syððan ærest wearð fea sceaft funden",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of siþþan"
      ],
      "links": [
        [
          "siþþan",
          "siþþan#Old_English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "syððan"
}