Apologies if this against sub guidelines, but I thought it might be of interest to some of you. I found this original illustrated document in my family papers and am having trouble interpreting the handwriting and identifying the lineage to which it refers. Any help is appreciated!
not implying that you won't find help here, but you may consider x-posting to /r/heraldry; they have an "Identify" category
edit: just idly picking out a few names & words in the paragraph on the first page, it appears to relate to the marriage of Emmanuel Philibert Duke of Savoy (his crest looks similar to the top left?) and Marguerite de France, daughter of the king of France Francois 1er and his wife Claude de France. Kings Henry and Phillipe are also mentioned... (For orientation, here's a chart of the kings of France)
The second page refers to the Maison de Roye (link includes family tree), House of Bourbon (family tree), and the Maison de Mailly (out of interest, here's a list of counts): starting with Charles de Roye on the left, and Louis de Mailly Baron de Conty (comté?) on the right, and culminating in Henry de Bourbon, Roy de France (i.e. King Henry IV of France).
Must say this diagram is unclear: some names don't seem to correlate, there are placeholders such as "madame" for some wives, and it doesn't appear to be a straight-up genealogy: Henry IV is not the son of Louis de Bourbon and [E]leanor de Roye; rather, their son is Henry 1st of Bourbon-Condé. Anyway, something to start with.