Coat of arms of Karl Ambrosius von Habsburg-Lothringen, bishop of Vác, Hungary (1806 - 1808), archbishop of Esztergom (1808 - 1809). Based on his gravestone in crypt of Esztergom Basilica.
Order of Saint Stephen of Hungary from here: https://commons.wikimedia.org/wiki/File:Imperial_Coat_of_Arms_of_the_Empire_of_Austria.svg (by Sodacan),
princely hat from here: https://commons.wikimedia.org/wiki/File:Princely_Hat.svg (by Adelbrecht),

galero and tassels from here: https://commons.wikimedia.org/wiki/File:Template-Archbishop.svg (by SajoR)
Own work
GiMa38