For more new books about royalty see:
AUSTRIA (NOBILITY)
Author: Maria Theodora Freifrau von dem Bottlenberg-Landsberg.
Title: Im Wirbel der Zeiten. Das Leben der Anna Prinzessin Schwarzenberg (In the vortex of times. The life of Anna Princess Schwarzenberg).
Publication: 1 January 2021 by wbg Academic in Wissenschaftliche Buchgesellschaft.
Language: German.
FRANCE
Author: Pierre Branda.
Title: Napoléon à Sainte-Hélène (Napoleon at Saint-Helena).
Publication: 8 January 2021 by Perrin.
Language: French:
FRANCE
Author: Céline Borello.
Title: Catherine de Médicis.
Publication: 13 January 2021 by Presses universitaires de France (PUF).
Language: French.
GERMANY (HESSEN)
Author: Annotated and expanded by Arturo E. Beéche and Ilana D. Miller.
Title: Recollections. Victoria Marchioness of Milford Haven, Formerly Princess Louis of Battenberg.
Publication: 1 January 2021 at Eurohistory.com.
Language: English.
GERMANY
Author: Anna Eunike Röhrig.
Title: Der Clan Friedrichs des Großen. Ein König mit 13 Geschwistern (The clan of Frederick the Great. A king with 13 siblings).
Publication: 1 January 2021 by MatrixMedia.
Language: German.
PORTUGAL
Author: Dativo Salvia Ocaña.
Title: Las seis hermanas Braganza. Historia de las sorprendentes hijas del exiliado rey Miguel I de Portugal/The six stunning Infantas. The unexpected fortune of the daughters of exiled King Miguel I of Portugal.
Publication: 3 January 2021, independently published.
Language: Spanish/English.
ROMANIA
Author: Paul Lindenberg.
Title: König Karl von Rumänien (King Carol of Romania).
Publication: 9 January 2021 by Classic-Library.
Language: German.
RUSSIA
Author: Rebecca Bettarini.
Title: Beauty Queen. An international thriller.
Publication: 25 January 2021 by Europe Books.
Language: English.
Publication: 24 May 2021 by Los Libros de la Catarata.
UNITED KINGDOM
Author: Clive Irving.
Title: The Last Queen. Elizabeth II’s Seventy Year Battle to Save the House of Windsor.
Publication: 5 January 2021 by Pegasus Books.
Language: English.
UNITED KINGDOM
Author: Christopher Warwick, Reuel Golden (ed.).
Title: Her Majesty. A Photographic History 1926-Today.
Publication: 15 January 2021 by Taschen (updated edition).
Language: English.
UNITED KINGDOM
Author: Daniel A. Willis.
Title: The Complete Line of Sucession 2021.
Publication: 2 January 2021 by House of Willis Publishing.
Language: English.