A feminine suffix common in Quenya names, in one place given as a feminine patronymic (PE17/170), though there are no attested Quenya names in which it was used that way.
Conceptual Development: In The Etymologies of the 1930s, ᴹQ. ien was given as a (suffixal?) variant of ᴹQ. yen(de) “daughter” (Ety/YŌ; EtyAC/YŌ), but again there are no actual names from this period using the suffix in that way.
Silmarien (sometimes "-riën") fem. name, apparently incorporates sil(i)ma (Appendix A) and the feminine ending -ien, or -rien as a variant of -riel (garlanded maiden) as in Altariel (Galadriel).