Gülendam
Yes. Gülendam is rooted in Turkish and Persian lexemes and has historical usage in Ottoman and Anatolian naming traditions.
No. The name is Persian-Turkish in origin and poetic in nature; it is not from the Quran but is culturally compatible with Islamic naming when used respectfully.
Common Latin-script forms include Gulendam and Gülendam; the letter 'ü' represents the Turkish front rounded vowel.
'Endam' is Persian for 'body' or 'figure' and is frequently used in Persian and Ottoman literature to describe form, posture, or beauty.
It is rare but occasionally found among families who favor classical Ottoman/Persian poetic names with floral imagery.