Old Norse þaðan

← Old Norse þar (mention)

← Old Norse þaðra (mention)

← Old Norse -an (mention)

← Old Norse héðan (mention)

← Old Norse hvaðan (mention)

→ Faroese haðani (inherited)

→ Norwegian Nynorsk dedan (inherited)

→ Old Norse hvaðan (mention)

→ Old Norse héðan (mention)

→ Swedish dädan (inherited)