Blazon: Per quarterly I and IV lozengy argent and gules (Appiani), II and III per quarterly i and iv tierced per pale 1 barry of eight gules and argent (Hungary ancien), 2 azure semé de lis or (France ancien), and 3 argent a cross paté between four crosses or (Jerusalem), ii and iii or four palets gules (Aragon); overall a chief gules a cross argent (Savoy)
“Louis” appears to be Alfonso d’Appiani, brother of Jacopo VI. He seems to have been a military man, possibly serving under Ferdinando II de’ Medici, Grand Duke of Tuscany.
Blazon: Per quarterly I and IV lozengy argent and gules (Appiani), II and III per quarterly i and iv tierced per pale 1 barry of eight gules and argent (Hungary ancien), 2 azure semé de lis or (France ancien), and 3 argent a cross paté between four crosses or (Jerusalem), ii and iii or four palets gules (Aragon)
The alliance between the Appianis and the house of Aragon began (informally) in 1445, when Emanuele Appiani married Colia de’ Giudici, the illegitimate daughter of King Alfonso V of Naples. His great-grandson Jacopo V also married into the house of Aragon via Marianna of Aragon in 1510, though she died before she could bear any children.
Archbisop of Rouen 1651-1671, Archbishop of Paris 1671-1695, duke of Saint-Cloud 1674-1695 (1625-1695)
Blazon: Party of eight, I or a fess chequy gules and argent (La Marck), II azure an escutcheon* argent within an orle or and eight crosses couped of the second also in orle (Brézé), III argent three bars gules (Croÿ), IV azure three fleurs-de-lis or surmounted by a baton in bend gules (Bourbon), V azure semé of cross crosslets fitchy or a lion rampant argent (Sarrebruck), VI paly of six or and gules (Amboise), VII per quarterly i and iv lozengy in bend argent and azure (Bavaria), ii and iii sable a lion rampant crowned or, armed and langued gules (Brabant), VIII azure six plates in pile and a chief or (Poitiers-Valentinois); overall in the fess point an escutcheon argent two palets sable (Harlay)
*This charge seems to be depicted as a pale couped here instead of the escutcheon specified in the blazon.
Blazon: Azure a castle triple-towered or windowed gules between in base the letters C and D argent and in fess two wings, pinions to the exterior of the second, in chief between two molets of eight points in bend and as many like molets in bend sinister a lozenge of the last charged with four palets of the third surmounted by two keys in saltire of the fourth; all within a bordure of the third charged with eight like molets
Lord of Agout, Vesc, Montlaur, and Montauban, count of Canaples and Sault, duke of Lesdiguières 1638-1677 (1596-1677)
Blazon: Party of six, I or a plum tree gules (Créquy), II or two lions passant in pale gules (Blanchefort), III or a wolf rampant azure (Agoult), IV azure three towers or (La Tour-Montauban), V azure three palets and a chief or (Vesc), VI or two lions passant in pale guardant or (Maubec-Montlor); overall in the fess point an escutcheon gules a lion rampant or, armed and langued azure, on a chief of the last three roses argent, slipped and seeded proper (de Bonne)