Middle English word clanly comes from Old English clǣne, Old English -līc, Old English clǣnlīc, and later Old English clænlic (Cleanly, pure, excellent, splendid.)

Detailed word origin of clanly

Dictionary entry	Language	Definition
clǣne	Old English (ang)
-līc	Old English (ang)
clǣnlīc	Old English (ang)
clænlic	Old English (ang)	Cleanly, pure, excellent, splendid.
clenli	Middle English (enm)

Words with the same origin as clanly