Coat of arms of József cardinal Mindszenty, bishop of Veszprém, Hungary (1944 - 1945), archbishop of Esztergom (1945 - 1974). Part with roses is coat of arms of Pehm family, because cardinal was born as Pehm. Part with St. Margareth of Hungary originally based on this middle age miniature: https://hu.wikipedia.org/wiki/F%C3%A1jl:Arpadhazi_szent_margit.jpg See also here: https://hu.wikibooks.org/wiki/F%C3%A1jl:Mindszenty_J%C3%B3zsef_b%C3%ADboros.png, his gravestone here: https://commons.wikimedia.org/wiki/File:COA_cardinal_HU_Mindszenty_Jozsef.jpg, stained glass in Pusztaszabolcs (without part of Pehm): http://www.salwex.hu/termek/olomuveg-pusztaszabolcs_mindszenty_cimer_festett_olomuveg or version used as bishop of Veszprém here: http://real.mtak.hu/33197/1/ZM22_09_BALOGH.pdf (p. 256) (NB: St. Margareth is holding a book. On some pictures St. Margareth is holding the PX monogram).
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