Johanna of Austria was born 24 January 1547 in Prague, Czech Republic to Ferdinand I of the Holy Roman Empire (1503-1564) and Anna of Bohemia and Hungary (1503-1547) and died 11 April 1578 of unspecified causes. She married Francesco I de' Medici (1541-1587) 25 December 1565 JL .
Children
| Name | Birth | Death | Joined with |
| Eleonora de' Medici (1567-1611) | 28 February 1567 Florence, Italy | 9 September 1611 Cavriana | Vincenzo I Gonzaga (1562-1612) |
| Romola de' Medici (1568-1568) | |||
| Anna de' Medici (1569-1584) | |||
| Isabella de' Medici (1571-1572) | |||
| Lucrezia de' Medici (1572-1574) | |||
| Marie de' Medici (1575-1642) | 26 April 1575 Florence, Italy | 3 July 1642 Cologne, North Rhine-Westphalia, Germany | Henri IV de Bourbon (1553-1610) |
| Filippo de' Medici (1577-1582) | |||
Footnotes (including sources)
|