Full Idea
Having proposed that descriptions should be treated in quantificational terms, Russell then went on to introduce the subsidiary injunction that proper names should be treated as descriptions.
Gist of Idea
Treat description using quantifiers, and treat proper names as descriptions
Source
report of Bertrand Russell (The Philosophy of Logical Atomism [1918]) by Gregory McCullogh - The Game of the Name 2.18
Book Reference
McCulloch,Gregory: 'The Game of the Name' [OUP 1989], p.50
A Reaction
McCulloch says Russell 'has a lot to answer for' here. It became a hot topic with Kripke. Personally I find Lewis's notion of counterparts the most promising line of enquiry.