Quenya 

Mairen

well

Mairen fem. name(UT:210), initial element perhaps related or identical to mai "well". The second element is obscure; the root REN "recall, have in mind" (PM:372) could be related; if so the name may imply "well remembered", "(of) good memory" or something similar. It may also connect with the adj. maira, q.v. and compare the masc. name Mairon (PE18:163).