Hybridizers try to come up with names that fit the color, the shape, pattern, or just something fun and marketable like the name of a song. Schreiner's has introduced so many irises over the years I don't think any one name has huge significance beyond what is listed above.
The iris you are referring to is Superstition
If you click on the name (blue text) in the box it will take you to the database page for this iris.
Good luck on your research. We would love to see what you find out!
And welcome!!!