Ernie Clements had his own shop in the 50's, before he joined Falcon, and built some lovely bikes then. There were also Clements branded bikes built outside of Falcon, in the late 70's/early 80's, and the CR list guys have produced varying vague opinions about who built them (I had one, so I was interested). The most likely idea seems to be another member of the Clements family.
This, however, is not either of those things.