An Armenian, born Dikran Kouyoumdjian in Bulgaria, Arlen became a popular writer in England in the '20s (<a href=http://en.wikipedia.org/wiki/Michael_Arlen>Wikipedia</a>, <a href=http://homepages.pavilion.co.uk/users/tartarus/arlen.htm>Tartarus</a>). Michael J Arlen, who also appears in Open Library (<a href=http://openlibrary.org/authors/OL381795A>here</a>) is probably the son mentioned in the Wikipedia link.