Ferdinand III, Holy Roman Emperor

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 * house = Habsburgs of Austria
 * father = Ferdinand II, Holy Roman Emperor
 * mother = Maria Anna of Bavaria
 * date of birth = 13 July 1608
 * place of birth = Graz, Austria, HRE
 * date of death = April 2, 1657
 * place of death = Hofburg, Vienna, Austria
 * burial_date =
 * place of burial = Imperial Crypt
 * religion = Roman Catholicism
 * signature = Signatur Ferdinand III. (HRR).PNG

Ferdinand III (Ferdinand Ernest; 13 July 1608, in Graz – 2 April 1657, in Vienna) was Archduke of Austria from 1621, King of Hungary from 1625, King of Croatia and of Bohemia from 1627 and Holy Roman Emperor from 1637 to his death.

First marriage
On 20 February 1631, Ferdinand III married Maria Anna of Austria. She was the youngest daughter of Philip III of Spain.

Issue

 * 1) Ferdinand IV, King of the Romans (8 September 1633 – 9 July 1654) King of the Romans and titular King of Hungary and Bohemia, never married
 * 2) Maria Anna (known as "Mariana") of Austria (22 December 1634 – 16 May 1696) married Philip IV of Spain and had issue.
 * 3) Archduke Philip August of Austria (15 July 1637 – 22 June 1639) died young.
 * 4) Maximilian Thomas (21 December 1638 – 29 June 1639) died young.
 * 5) Leopold I, Holy Roman Emperor (9 June 1640 – 5 May 1705)
 * 6) Archduchess Maria of Austria (born an died 13 May 1646) died at birth.

Second marriage
On 2 July 1648, he married Archduchess Maria Leopoldine of Austria in Linz.

Issue

 * 1) [[Archduke Karl Joseph of Austria ((7 August 1649 – 27 January 1664) died unmarried.

Third marriage
On 30 April 1651, he married Eleonora Gonzaga. She was a daughter of Charles IV Gonzaga, Duke of Rethel.

Issue

 * 1) Archduchess Theresia Maria Josefa of Austria (27 March 1652 –  26 July 1653)
 * 2) Archduchess Eleonora Maria of Austria (21 May 1653 – 17 December 1697); married first Michael Korybut Wiśniowiecki, King of Poland, and then Charles V of Lorraine.
 * 3) Archduchess Maria Anna Josepha of Austria (30 December 1654 –  4 April 1689) married Johann Wilhelm, Electoral Prince of the Palatinate.
 * 4) Archduke Ferdinand Josef Alois of Austria (11 February 1657 –  16 June 1658)