I would like to know about the artist Auguste Von Siegen.  Was he ever
known as Auguste Siegen?

Dear joannebw,

I assume that the artist you have in mind is August von Siegen, born
ca. 1850 in Vienna, Austria.
In that case, the answer is: Yes, he was known as August Siegen. He
signed paintings with a plain "Aug[ust] Siegen", omitting the
aristocratic title "von".

Here are some examples:

August von Siegen, "Motif from Venice". Signed "Aug. Siegen".
http://www.beyars.com/kunst/popup_schmuckstueck-grossbild.php?prodid=10811
Source: BeyArs.com, Art Dealer

August von Siegen, "Harbour Scene". Signed "Aug. Siegen".
http://www.p4a.com/itemsummary/16648.htm
Source: p4A.com Ltd. Antiques Database

August von Siegen, "Market Scene in Cairo". Signed "Aug. Siegen".
http://www.p4a.com/itemsummary/111319.htm
Source: p4A.com Ltd. Antiques Database

Hope this answers your question!
Regards,
Scriptor


Search terms used:
"august siegen"
://www.google.de/search?hl=de&newwindow=1&c2coff=1&q=%22august+siegen%22&btnG=Suche&meta=
"von siegen" august
://www.google.de/search?q=%22von+siegen%22+august&hl=de&lr=&newwindow=1&c2coff=1&start=0&sa=N
"aug siegen"
://www.google.de/search?q=%22aug+siegen%22&hl=de&lr=&newwindow=1&c2coff=1&start=0&sa=N&filter=0
"siegen august von"
://www.google.de/search?hl=de&newwindow=1&c2coff=1&q=%22siegen+august+von%22&btnG=Suche&meta=

Thank you so much...having two similar names to artists confused my
search of cyberspace...but you came through!  Thanks Scriptor!  Now I
have to find out if it's worth anything...Joannebw

I believe that "August von Siegen" as referred to by Scriptor is the
painter you have in mind.

However, to avoid a possible misunderstanding I would like to point
out that apparently another painter by this name is "Auguste Von
Siegen (1796-1869)":
http://www.crgalleries.com/vonsiegen.html

The German name "Auguste" is a female name. 

Therefore, http://www.crgalleries.com/vonsiegen.html would either
mistakenly describe him as a male painter. Or, "Auguste" would
possibly be his name as pronounced and written in French.