For more new books about royalty see:
AUSTRIA
Title: Sisi – Das geheime Leben der Kaiserin
Author: Katrin Unterreiner
Publication date: 11 September 2023
Publisher: Carl Ueberreuter Verlag
Language: German
BELGIUM
Title: Onze koningen: Interview met de geschiedenis – Het Belgische koningshuis
Authors: Arnout Hauben and Katrien de Groef
Publication date: 1 September 2023
Publisher:
Language: Dutch
FRANCE (Napoléon)
Title: “Sur les bords de la Seine…” – Histoire et secrets du tombeau de Napoléon
Author: Thierry Lentz
Publication date: 7 September 2023
Publisher: Perrin
Language: French
GENERAL
Title: Manuel de survie royale et de bonnes manières
Author: Thomas Pernette
Publication date: 13 September 2023
Publisher: E/P/A
Language: French
GENERAL
Title: Monarchie – Koningshuizen in Europa vanaf 1940, geschiedenis, uitdagingen en overlevingskansen
Author: Kemal Rijken
Publication date: 28 September 2023
Publisher:
Language: Dutch
GERMANY
Title: Coburg Darmstadt Windsor – Deutsch-englische Geschichten und Geschichte aus den Fürstenhäusern des 19. Jahrhunderts
Author: Mark Grinsted
Publication date: 3 September 2023
Publisher: Books on Demand
Language: German
GERMANY (Thüringen) / FRANCE
Title: Radegund. The Trials and Triumphs of a Merovingian Queen
Author: E.T. Dailey
Publication date: 15 September 2023 (US) / 23 November 2023 (UK)
Publisher: Oxford University Press
Language: English
GREECE
Title: Crown, Art, and Fantasy: A Life in Pictures
Author: Prince Michael of Greece
Publication date: 12 September 2023 (US), 3 October 2023 (UK)
Publisher: Rizzoli
Language: English
HOLY ROMAN EMPIRE / BOHEMIA
Title: Kaiser Karl der Vierte: Das Beben der Welt. Eine Biographie
Author: Olaf B. Rader
Publication date: 21 September 2023
Publisher: C.H. Beck
Language: German
RUSSIA
Title: Alexandra Feodorovna, Diaries and Correspondence, Volume 2 – Engagement and Marriage, 1894
Author: George Hawkins
Publication date: 11 September 2023
Publisher: independently published
Language: English
SWEDEN
Title: Kulturkungen Gustaf VI Adolf från A till Ö
Author: Frederick Whitling
Publication date: 8 September 2023
Publisher: Appell Förlag
Language: Swedish
SWEDEN
Title: La regina che amava la libertà: Storia di Cristina di Svezia dal Nord Europa alla Roma Barocca
Author: Annarosa Mattei
Publication date: 8 September 2023
Publisher: Salani
Language: Italian
THE NETHERLANDS
Title: De achterblijvers – Het Hof na de vlucht van Wilhelmina 1940-1945
Author: Flip Maarschalkerweerd
Publication date: 19 September 2023
Publisher: Balans
Language: Dutch
THE NETHERLANDS
Title: De Prinsentuin in Groningen – Van stadhouderlijke gaerde tot publiekstuin
Author: Edward Houting
Publication date: 7 September 2023
Publisher: Noordboek
Language: Dutch
THE NETHERLANDS
Title: Spiegelingen – De vernieuwing van Paleis Het Loo
Authors: Floris Alkemade, Peter Bakkum, Pien Harms, Anton Kos, Michel van Maarseveen, Koen Ottenheym, Wim Pijbes, Dikkie Scipio
Publication date: 5 September 2023
Publisher: NAI010 Uitgevers
Language: Dutch
UNITED KINGDOM
Title: Kings and Queens: 1200 Years of English and British Monarchs
Author: Iain Dale
Publication date: 14 September 2023
Publisher: Hodder & Stoughton
Language: English
UNITED KINGDOM
Title: Alfred’s Dynasty – How an Anglo-Saxon King and his Family Defeated the Vikings and Created England
Author: W.B. Bartlett
Publication date: 15 September 2023 (UK), 12 December 2023 (US)
Publisher: Amberley Publishing
Language: English