The following information about Pierre d' Avesn has been obtained from the Art Deco Ceramic Glass Light web site and I quote.
Pierre d'Avesn 1901-1990
It is said that from the young age of 14 he worked for Ren'e Lalique a famous French Art Glass designer.
And during the 10 year period that he worked at Lalique he designed the "Serpent" vase and the "Tourbillons" vase pictured below.
These vases are much sort after by collectors and command a high price.
His designes were produced by Cristallerie de Saint-Rémy.
In 1930 Daum Freres approached Pierre d'Avesn to take over the artistic direction of their molded glass department, at the
glass-works in Croismare.
This affiliation lasted up until the strike of 1936.
From 1937 to 1940 he took over the management of Verly's
From 1940, he returned to working on his own.
His designs were then produced by Cristallerie de Choisy-le-Roi- (Sèvres).
Piere D' Avesn is up there standing shoulder to shoulder with other famous French Art Glass designers.
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