It could also be inspired by the Welsh term of endearment annwyl, which is used to mean "dear, beloved" (compare the surname Anwyl and the word anwylyd ("darling, loved one"), which is simply annwyl with the addition of the suffix -yd), or the common name Ann.
The name's origin could be linked to the Welsh term of affection "annwyl," meaning "dear, beloved." This is comparable to the surname "Anwyl" and the word "anwylyd," conveying a sense of fondness.