https://en.wikipedia.org/wiki/Johannes_Kepler

Johannes Kepler was a German astronomer, mathematician, and astrologer. He is a key figure .... Kepler's first major astronomical work, Mysterium Cosmographicum (The Cosmographic Mystery, 1596), was the first ... In 1602, they had a daughter (Susanna); in 1604, a son (Friedrich); and in 1607, another son (Ludwig).

https://www.geni.com/people/Johannes-Kepler/6000000000668688183

May 23, 2018 ... Genealogy for Johannes Kepler (1571 - 1630) family tree on Geni, with over ... Son of Heinrich Kepler and Katharina Kepler ... As Barbara was recovering, Kepler's three children all fell sick with smallpox; Friedrich, 6, died..." ".

https://www.notablebiographies.com/Jo-Ki/Kepler-Johannes.html

The German astronomer Johannes Kepler's discovery of three basic laws ... in 1612 with his two children, his wife and his favorite son, Friedrich, were dead.

http://www.localhistories.org/kepler.html

Johannes Kepler was one of the great astronomers of the 17th century. Kepler was ... In 1611 Kepler's wife Barbara died. His son Friedrich also died. Then in ...

http://galileo.rice.edu/sci/kepler.html

Kepler's teacher in the mathematical subjects was Michael Maestlin (1550-1635). ... who married Kepler's assistant Jakob Bartsch in 1630, Friedrich (1604-1611), and Ludwig ... At her trial, her defense was conducted by her son Johannes.

https://academic.oup.com/astrogeo/article/50/6/6.15/192047

Dec 1, 2009 ... And Johannes Kepler was born, on 27 December (at 2.30 in the afternoon, .... And early in the year, Kepler's favourite child, Friedrich, died of ...

https://www.thoughtco.com/johannes-kepler-astronomy-4072521

In 1602, Kepler's daughter Susanna was born, followed by sons Friedrich in 1604 and Ludwig in 1607. In 1609, Kepler published "Astronomia Nova," which ...

https://www.thefamouspeople.com/profiles/johannes-kepler-515.php

Sep 18, 2017 ... Read on to learn more about Johannes Kepler's profile, childhood, life and ... Kepler, Fridmar Kepler, Friedrich Kepler, Heinrich Kepler, Hildebert Kepler, ... a sickly looking boy who was mentally and physically weak as a child.

https://cosmicpursuits.com/967/johannes-kepler/

May 5, 2016 ... His name was Johannes Kepler, who, despite his idiosyncrasies, used Tycho's work to ... Tycho's wealthy benefactor, King Frederick of Denmark, drank himself into an early ... Kepler's early scientific ideas were naive, if not foolish. ... His wife and favorite son died of typhus and smallpox, and his friend, the ...

https://www.historyextra.com/period/stuart/the-astronomer-and-the-witch-johannes-keplers-fight-to-save-his-mother-from-execution/

Apr 15, 2016 ... The astronomer and the witch: Johannes Kepler's fight to save his mother from execution .... Her youngest son, Christoph, a local pewterer, was horrified. ... Christoph wrote to Duke John Frederick of Württemberg at once, ...