Lyonnais mystery no. 2

The grand Louis XIII-style building situated at 8 Rue Godefroy in the upmarket 6th arrondissement is completely unique in Lyon and considered one of the city's most important hôtels particulier (mansions). Yet it isn't a stop on any of the innumerable guided tours. Nor is it featured in any of the guidebooks that I've come across. It is therefore theoretically ideal for inclusion on the Invisible Lyon blog.

However, when one of my readers asked me to look into its past, I soon found that this was a lot easier said than done.