There is no mention of any form of a name like that in any of the motorcycles that were factory made.
It's my opinion that the builder made a conglmeration of what he though was a nice looking package, with parts from a variety of models, and called it a "Tamlaw".
It's a nice looking bike.
I don't think it is any factory built model.
I think it's a custom job, built by him or a previous owner.