Featured signature on art glass vase

Does anyone recognize this signature on this 5 inch vase? Looks like F or L and then last name beginning with W. I did find some art glass by Frederick Warren, but neither style or signature seem to be a match. Thanks for any help.

 

Thanks INH.
I just saw a sold vase on rubylane from Frederick Warren that is more similar in style and signature to mine, so maybe mine is Frederick Warren. I will post a link later when I am on a better device.

 

And another on liveauctioneers.
Think I answered my own question.

 

Very pretty!!

 

I found a J Warren with similar glass. but this worthpoint does not show this signature

Vintage 1976 J Warren Studio Blown Art Glass Red Blue Green Brown Signed Vase | #1792060049 (worthpoint.com)

 

It must be really hard to use a stylus on glass. Most of these signatures look like scratches to me. But then, I have bad eyes (but getting cadillac surgery on Monday, Yeah!!).

 

Both of these are like mine, but no signatures are shown.
https://www.worthpoint.com/worthopedia/vintage-fred-frederick-warren-hand-1921370123
https://www.worthpoint.com/worthopedia/frederick-warren-art-glass-swirled-1917759893

This one from liveauctioneers shows a signature that is close enough.
https://www.liveauctioneers.com/en-gb/item/44103525_frederick-warren-agate-art-glass-vase

Not sure how I missed all these in my initial research, but I think "mystery" solved.

 

Perhaps you were distracted by the beauty and originality of the glass! This one didn't jump up and down and say Murano to me either. I sure do like it though!