1. Latin: olive tree; peace. Sindarin: (peace) Sîdh; fem. Sídheth; fem. (maiden of peace) Sídhwen

There is no name for an olive tree in Sindarin; Neo-Sindarin ORNIAF ‘tree of fruit’ is possible.

2. Old Norse: protection. Sindarin: Beriad; fem. Beriadeth; fem. (maiden of protection) Beriadiel, Beriadien, Beriadwen

3. from the Scandinavian word liv, meaning ‘life’. Sindarin: Cuil; fem. Cuileth