Sharp Eyes and the Roy Rogers Plaque

Last evening, I posted on The Roy Rogers and Dale Evans Fan Group on Facebook the blog post of last year's Billy Holcomb Chapter (of the Ancient and Honorable Order of E Clampus Vitus) Roy Rogers and Dale Evans plaque dedication.

The administrator of the group, with sharp eyes, asked:

Was there not an E on the end of Sly.???

Roy Rogers birth (or real name) was Leonard Slye.

Here's the plaque in question:

Above, the Roy Rogers/Dale Evans plaque. Photo by Gary Julian.

For those unfamiliar with the traditions of E Clampus Vitus, the Order was founded during the California Gold Rush and was/is based on poking fun on other (more serious) fraternal orders. E Clampus Vitus (ECV) is based on humor. 

One of the more humorous aspects of ECV is that it is traditional to have one misspelled word in ECV plaques. Therefore, that is why Leonard Slye in the plaque was misspelled "Leonard Sly".

This question came up years ago regarding the Godzilla plaque in Los Angeles by a non-Clamper. 

I posted an explanation accordingly. 

UPDATE:

It appears Roy Rogers' family name was spelled both ways. So it looks like the "misspelling" was unintentional in this case.

Here's Roy's father's marriage document: