What does Esmeray mean?
From Turkish 'esmer' meaning 'dark, brunette' and 'ay' meaning 'moon', giving 'dark moon'. (A 'sunbeam/beloved' reading circulates but does not fit the Turkish elements and appears to be a folk reinterpretation.)
What does Aylin mean?
Aylin is a Turkish name built on 'ay' ('moon'), usually read as 'moon halo' or 'belonging to the moon.' The moon root is solid, though the exact second element is less certainly glossed.