The first name of this beautiful Art Nouveau font was
IIRC "Toulouse Lautrec". But it became a "famous font"
through that TV series "Murder She Wrote" starring
Angela Lansbury as detective novelist Jessica Fletcher.
So it became "Fletcher Gothic", "Lansbury" etc. with
many. In a font book I found the name "Art Gothic".
"Agatha" (Weatherley Systems) seems to be inspired by
another detective novelist.

I added many characters. Alternative characters had
to go to different places, use a charmap program or
print out a chart to see what's in it. Some kern pairs,
smoother glyphs, the usual things.

This is a free font but not in the public domain. Use
it for any purpose, pass it on as long as you do it
for free, but if you want to meddle with it ask me
first or use one of the PD versions mentioned above.