Archduchess Isabella Clara of Austria (English Wikipedia)

Thomas Kuster (2011). "FERDINAND KARL von Habsburg". In Bautz, Traugott (ed.). Biographisch-Bibliographisches Kirchenlexikon (BBKL) (in German). Vol. 32. Nordhausen: Bautz. cols. 433–449. ISBN 978-3-88309-615-5.

britannica.com (Global: 40^th place; English: 58^th place)

Ferdinand I, Holy Roman Emperor at the Encyclopædia Britannica
Charles V, Holy Roman Emperor at the Encyclopædia Britannica

deutsche-biographie.de (Global: 1,974^th place; English: 2,237^th place)

Obermayer-Marnach, Eva (1953). "Anna Jagjello". Neue Deutsche Biographie (in German). Vol. 1. Berlin: Duncker & Humblot. p. 299. (full text online).
Goetz, Walter (1953). "Albrecht V.". Neue Deutsche Biographie (in German). Vol. 1. Berlin: Duncker & Humblot. pp. 158–160. (full text online).

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daten.digitale-sammlungen.de

Obermayer-Marnach, Eva (1953). "Anna Jagjello". Neue Deutsche Biographie (in German). Vol. 1. Berlin: Duncker & Humblot. p. 299. (full text online).
Goetz, Walter (1953). "Albrecht V.". Neue Deutsche Biographie (in German). Vol. 1. Berlin: Duncker & Humblot. pp. 158–160. (full text online).

encyclopedia.com (Global: 462^nd place; English: 345^th place)

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fermimn.gov.it (Global: low place; English: low place)

Paola Artoni, Paolo Bertelli, Vannozzo Posio: Carlo II Gonzaga Nevers (1629–1665) in: Storia di Mantova (www.fermimn.gov.it) Archived 3 July 2019 at the Wayback Machine [retrieved 4 December 2016].
Paola Artoni, Paolo Bertelli, Vannozzo Posio: Ferdinando Carlo Gonzaga Nevers (1652–1708) in: Storia di Mantova (www.fermimn.gov.it) Archived 3 July 2019 at the Wayback Machine [retrieved 4 December 2016].

findagrave.com (Global: 601^st place; English: 1,499^th place)

Isabella Clara of Tyrol in: findagrave.com [retrieved 4 December 2016].

genmarenostrum.com (Global: low place; English: low place)

GONZAGA: LINEA SOVRANA DI MANTOVA in: www.genmarenostrum.com (Libro d'Oro della Nobiltà Italiana) [retrieved 4 December 2016].

medici.org (Global: low place; English: low place)

"The Medici Granducal Archive" (PDF). The Medici Archive Project. pp. 12–13. Archived from the original (PDF) on 25 April 2005. Retrieved 28 August 2018.

nuovorinascimento.org (Global: low place; English: low place)

Gregorio Leti: L’amore di Carlo Gonzaga, duca di Mantova e della contessa Margarita della Rovere in: nuovorinascimento.org [retrieved 4 December 2016].

translate.google.com (Global: 1,064^th place; English: 992^nd place)

Isabella Clara's time of regency for her son (1665–1669)

treccani.it (Global: 182^nd place; English: 981^st place)

Raffaele Tamalio: Isabella Clara d'Asburgo, duchessa di Mantova e del Monferrato – Dizionario Biografico degli Italiani vol. 62 (2004) in: www.treccani.it [retrieved 4 December 2016].
Gino Benzoni: Carlo II Gonzaga Nevers, duca di Mantova e del Monferrato – Dizionario Biografico degli Italiani vol. 20 (1977) in: www.treccani.it [retrieved 4 December 2016].
Raffaele Tamalio: Maria Gonzaga, duchessa di Monferrato e di Mantova – Dizionario Biografico degli Italiani vol. 70 (2008) in: www.treccani.it [retrieved 4 December 2016].

web.archive.org (Global: 1^st place; English: 1^st place)

Paola Artoni, Paolo Bertelli, Vannozzo Posio: Carlo II Gonzaga Nevers (1629–1665) in: Storia di Mantova (www.fermimn.gov.it) Archived 3 July 2019 at the Wayback Machine [retrieved 4 December 2016].
Paola Artoni, Paolo Bertelli, Vannozzo Posio: Ferdinando Carlo Gonzaga Nevers (1652–1708) in: Storia di Mantova (www.fermimn.gov.it) Archived 3 July 2019 at the Wayback Machine [retrieved 4 December 2016].
"The Medici Granducal Archive" (PDF). The Medici Archive Project. pp. 12–13. Archived from the original (PDF) on 25 April 2005. Retrieved 28 August 2018.

wikisource.org (Global: 27^th place; English: 51^st place)

en.wikisource.org

Wurzbach, Constantin von, ed. (1860). "Habsburg, Claudia von Florenz" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 6. p. 159 – via Wikisource.
Wurzbach, Constantin von, ed. (1861). "Habsburg, Sigismund Franz von Tirol" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 7. p. 148 – via Wikisource.
Wurzbach, Constantin von, ed. (1860). "Habsburg, Leopold V." . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 6. p. 416 – via Wikisource.
Wurzbach, Constantin von, ed. (1860). "Habsburg, Karl II. von Steiermark" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 6. p. 352 – via Wikisource.
Wurzbach, Constantin von, ed. (1861). "Habsburg, Maria von Bayern" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 7. p. 20 – via Wikisource.
Wurzbach, Constantin von, ed. (1860). "Habsburg, Anna von Oesterreich (1528–1587)" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 6. p. 151 – via Wikisource.

Archduchess Isabella Clara of Austria (English Wikipedia)

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