"Jan, look what I could find just a few minutes ago: the Meuger family tree !
Only one discrepancy concerning the death date of the father Eugene in 1851 and not in 1894. It's likely that he died between 1862 and 1864 in agreement with the…"
all the history has now cleared by the my contact of Mirecourt (firstname.lastname@example.org). I paste here his answer:
Les dates doivent permettre d’être sûr. Le compositeur Jacques Alphonse (le grand père) est…"
"Very interesting documentation. Considering that the Chronicle of the city of Reims of the year 1867 mentions only the family name of the cellist and luthier Meurger but not the first name, and that it is not likely that a cellist can compose music…"
I got my informations from email@example.com to whom I sent the same photos you saw. There could have been a luthier grandfather and homonym ? It is interesting the mention you did to the use of this signature during 1820-21,…"
the Alphonse Meurger you mentioned is probably homonym of Alphonse Meurger luthier and cellist (1841 - 1892) active with his father at Reims from about 1860. A Reims town history book mentions among the most important people of 1867 the…"