Philip III, King of Spain
| Reign | September 13, 1598 - March 31, 1621 (22 years) |
| Predecessor | Philip II of Spain |
| Successor | Philip IV of Spain |
| House | House of Habsburg |
| Birth |
April 14, 1578 Madrid, Spain |
| Father | Philip II (1527-1598) |
| Mother | Anna, Archduchess of Austria (1549-1580) |
| Brothers |
Carlos, Prince of Asturias (1545-1568, Paternal Half-Brother) Ferdinand, Prince of Asturias (1571-1578) Charles Laurence, Archduke of Austria (1573-1575) Diego, Prince of Asturias (1575-1582) |
| Sisters |
Isabella Clara Eugenia, Archduchess of Austria (1566-1633, Paternal Half-Sister) Catherine Michelle, Duchess of Savoy (1567-1597, Paternal Half-Sister) Maria, Archduchess of Austria (1580-1583) |
| Paternal Grandparents |
Charles V, Holy Roman Emperor (1500-1558) Isabella, Infanta of Portugal (1503-1539) |
| Maternal Grandparents |
Maximilian II, Holy Roman Emperor (1527-1576) Maria, Archduchess of Austria (1528-1603) |
| Death |
March 31, 1621 Madrid, Spain (42 years) |
| Margaret, Archduchess of Austria (1584-1611) |
Married April 18, 1599 Widowed October 3, 1611 (12 years) |
|
Anne, Archduchess of Austria (m.1615 Louis XIII of France) (2 sons) |
Born September 22, 1601 Died January 20, 1666 (64 years) |
| Maria, Archduchess of Austria |
Born February 1, 1603 Died February 2, 1603 (1 day) |
|
(m.1615 Elisabeth, Princess of France) (2 sons, 6 daughters) (m.1649 Mariana, Archduchess of Austria) (3 sons, 2 daughters) |
Born April 8, 1605 Died September 17, 1665 (60 years) |
|
Maria Anna, Infanta of Spain (m.1631 Ferdinand III, Holy Roman Emperor) (4 sons, 2 daughters) |
Born August 18, 1606 Died May 13, 1646 (39 years) |
| Charles, Archduke of Austria |
Born September 15, 1607 Died July 30, 1632 (24 years) |
| Ferdinand, Archduke of Austria |
Born May 16, 1609 Died November 9, 1641 (32 years) |
| Margaret Frances, Archduchess of Austria |
Born May 24, 1610 Died March 11, 1617 (6 years) |
| Alphonse Maurice, Archduke of Austria |
Born September 22, 1611 Died September 16, 1612 (11 months) |