Where did the C# Programming Language Name Originate

In the late 1980s at Microsoft, there was an attempt at constructing some extensions to the C++ programming language, which were internally named C#. This project failed, was cancelled, and never used. However, about a decade later when Microsoft again attempted to form a programming language, they recycled the name. This name is now used for one of the most popular programming languages. The name was meant to represent C++++, if you view the # sign as four plus signs.