Bed and illegible signature

[Glasha]

Curious bed, a small -15 x 20 cm in the window, but the "autopsy" mat showed an illegible signature,
paper work itself - not the old, in my opinion, the second half of the twentieth.
With the recent letters all clear, and the first - mu lli? mei lli?

[Amateur]

Perhaps the author of this work is an Austrian artist, Walter O'Malley (Walter Malli, 1940 -). However, his artistic creativity is not very well known, although his work sometimes be found at auctions. Signed it is very unstable and, although it is not identical to that on your pastels, but well within the limits of permissible deviations.
Much more Mally known as a jazz musician and composer, one of the founders of the Viennese avant-garde jazz. On it you can see, for example, at http://archiv.hofmobiliendepot.at/malli/malli.html, which presents some of his graphic works. Generally about him a lot of information online, but - as a musician.

Before the signature - the inscription blue ballpoint pen, which I read as "Henri". Perhaps this is the name of the person depicted in the portrait.