Thanks very much to Jens Bilgrav for an email about Gordan, Ingordin, and Ingordan
It may interest you to know that another lead amulet was found in Svendborg, Denmark, with the same three names/incantations on it: http://ekstrabladet.dk/nyheder/samfund/hemmeligheden-i-magisk-dansk-amulet-afsloeret/5833123
Translated from Danish, the remaining part of the inscription reads:
"I conjure you elven men and elven women and all demons in the name of the Father, the Son, and the Holy Spirit, and all of God’s saints, lest you harm God’s handmaiden, Margareta, neither in eyes nor in other limbs. Amen. You are great in eternity, Lord."