Charles IX of Sweden
Charles IX, also Carl (4 October 1550 – 30 October 1611), was King of Sweden from 1604 until his death.
He was the youngest son of King Gustav I and his second wife, Margaret Leijonhufvud, brother of Eric XIV and John III, and uncle of Sigismund who was king of both Sweden and Poland.
By his father's will he got, by way of appanage, the Duchy of Södermanland, which included the provinces of Närke and Värmland; but he did not come into actual possession of them till after the fall of Eric and the succession to the throne of John in 1568.
Both Charles and one of his predecessors, Eric XIV (1560–68), took their regnal numbers according to a fictitious history of Sweden.
He was actually the third Swedish king called Charles.
He came into the throne by championing the Protestant cause during the increasingly tense times of religious strife between competing sects of Christianity.
In just over a decade, these would break out as the Thirty Years' War.
These conflicts had already caused the dynastic squabble rooted in religious freedom that deposed his nephew and brought him to rule as king of Sweden.
His reign marked the start of the final chapter (dated 1648 by some) of both the Reformation and Counter-Reformation.
With his brother's death in November 1592, the throne of Sweden went to his nephew and Habsburg ally, Sigismund of Poland and Sweden.
During these tense political times, Charles viewed the inheritance of the throne of Protestant Sweden by his devout Roman Catholic nephew with alarm.
Thus, several years of religious controversy and discord followed.
During the period, Charles and the Swedish privy council ruled in Sigismund's name while he stayed in Poland.
After various preliminaries, the Riksdag of the Estates forced Sigismund to abdicate the throne to Charles IX in 1595.
This eventually kicked off nearly seven decades of sporadic warfare as the two lines of the divided House of Vasa both continued to attempt to remake the union between the Polish and Swedish thrones with opposing counter-claims and dynastic wars.
Quite likely, the dynastic outcome between Sweden and Poland's House of Vasa exacerbated and radicalized the later actions of Europe's Catholic princes in the German states such as the Edict of Restitution.
In fact, it worsened European politics to the abandonment or prevention of settling events by diplomacy and compromise during the vast bloodletting that was the Thirty Years' war.
Marie Touchet
Marie Touchet( 1549 – 28 March 1638), Dame de Belleville, was the only mistress of Charles IX of France.
Princess Maria Elizabeth of Sweden
Princess Maria Elizabeth of Sweden( 10 March 1596, Örebro Castle – 7 August 1618, Bråborg Castle) was a Swedish princess, daughter of King Charles IX of Sweden and Christina of Holstein- Gottorp, and by marriage Duchess of Ostergothia.
Anna Maria of the Palatinate
Maria of the Palatinate (24 July 1561 – 29 July 1589) was a Swedish princess and Duchess of Södermanland by marriage, the first spouse of the future King Charles IX of Sweden.
She died before he became king, and was therefore never queen.
Anna Karlsdotter
Anna Karlsdotter( Vinstorpa)( died 1552), was a Swedish noble and landholder.
By her daughter Ebba Eriksdotter Vasa, she was the maternal grandmother of Queen Margaret Leijonhufvud and thereby great grandmother of King John III of Sweden and King Charles IX of Sweden.
She is remembered as one of several possible people later identified with the famous legend of Pintorpafrun.
Christina of Denmark, Queen of Sweden
Christina of Denmark( 1120/25 – 1160/70), was a queen consort of Sweden by marriage to King Eric IX of Sweden( r. 1156- 1160), and mother of King Canute I of Sweden.
Simon Fizes, baron de Sauves
Simon Fizes, baron de Sauves( 1535?
- 27 November 1579) was a Secretary of State under Charles IX of France, and Henry III of France.
Margaret Leijonhufvud
Margaret Leijonhufvud (née "Margareta Eriksdotter"; 1 January 1516 – 26 August 1551) was Queen of Sweden from 1536 to 1551 by marriage to King Gustav I.
Florimond II Robertet, seigneur de Fresne
Florimond II Robertet de Fresne (1531–1567) was a Secretary of State to Francis II of France, and Charles IX of France.
Florimond III Robertet d'Alluye
Florimond III, Baron Alluye,( 1540?- 1569) was governor of Orléans, and Secretary of State to Francis II of France, and Charles IX of France.

Question: When is Charles Ix Of Sweden's mother's birthday?
Answer: 1 January 1516