Frederick III, King of Denmark
| Reign | May 1, 1648 - February 9, 1670 (21 years) |
| Predecessor | Christian IV of Denmark |
| Successor | Christian V of Denmark |
| House | House of Oldenburg |
| Birth |
March 18, 1609 Haderslev, Denmark |
| Father | Christian IV (1577-1648) |
| Mother | Anne Catherine, Margravine of Brandenburg (1575-1612) |
| Brothers |
Frederik, Crown Prince of Denmark (1599-99) Christian, Crown Prince of Denmark (1603-47) Ulrik, Prince-Bishop of Schwerin (1611-33) Valdemar Christian, Count of Schleswig-Holstein (1622-56, Paternal Half-Brother) Friedrich Christian, Count of Schleswig-Holstein (1625-27, Paternal Half-Brother) |
| Sisters |
Sophie, Princess of Denmark (1605-05) Elisabeth, Princess of Denmark (1606-08) Anna Christiane, Countess of Schleswig-Holstein (1618-33, Paternal Half-Sister) Sophie Elisabeth, Countess von Pentz (1619-57, Paternal Half-Sister) Leonora Christina, Countess Ulfeldt (1621-98, Paternal Half-SIster) Elisabeth Augusta, Lady Lindenov (1623-77, Paternal Half-Sister) Christiane, Lady Sehested (1626-70, Paternal Half-Sister) Hedevig, Countess Ulfeldt (1626-78, Paternal Half-Sister) Maria Katharina, Countess of Schleswig-Holstein (1628-28, Paternal Half-Sister) Dorothea Elisabeth, Countess of Schleswig-Holstein (1629-87, Paternal Half-Sister) |
| Paternal Grandparents |
Frederick II of Denmark (1534-88) Sophie, Duchess of Mecklenburg-Güstrow (1557-1631) |
| Maternal Grandparents |
Joachim III Frederick, Elector of Brandenburg (1546-1608) Catherine, Margravine of Brandenburg-Küstrin (1549-1602) |
| Death |
February 9, 1670 Copenhagen, Denmark (60 years) |
| Sophie Amalie, Duchess of Brunswick-Lüneburg (1628-85) |
Married October 1, 1643 (26 years) |
| 1. Christian V of Denmark (1646-99) (53 years) |
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| Married 1: 1667-99 (died) Charlotte Amalie, Landgravine of Hesse-Kassel (1650-1714) |
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Child 1: Frederick IV of Denmark (1671-1730) married 1695-1721 (widowed) Louise, Duchess of Mecklenburg-Güstrow (1667-1721) Children: Christian (1697-98), Christian (1699-1746), Frederik Charles (1701-02), George (1703-04), Charlotte Amalie (1706-82) married 1721-30 (died) Anne Sophie, Countess Reventlow (1693-1743) Children: Christiana Amalia (1723-24), Frederik Christian (1726-27), Charles (1728-29) |
| Child 2: Christian Vilhelm, Prince of Denmark (1672-73) |
| Child 3: Christian, Prince of Denmark (1675-95) |
| Child 4: Sophia Hedwig, Princess of Denmark (1677-1735) |
| Child 5: Charles, Prince of Denmark (1680-1729) |
| Child 6: Christiane Charlotte, Princess of Denmark (1683-83) |
| Child 7: Vilhelm, Prince of Denmark (1687-1705) |