Louis I, Grand Duke of Hesse
Louis I, Grand Duke of Hesse( 14 June 1753 in Prenzlau – 6 April 1830 in Darmstadt) was" Landgrave of Hesse- Darmstadt"( as" Louis X") and later the first" Grand Duke of Hesse and by Rhine".
Landgravine Auguste of Hesse-Homburg
Landgravine" Auguste" Fredericka of Hesse- Homburg( full German name:" Auguste Friederike, Landgräfin von Hessen- Homburg"; 28 November 1776, Bad Homburg vor der Höhe, Landgraviate of Hesse- Homburg, Holy Roman Empire – 1 April 1871, Ludwigslust, Grand Duchy of Mecklenburg- Schwerin), was a member of the House of Hesse and a Landgravine of Hesse- Homburg by birth.
Through her marriage she was also a member of the House of Mecklenburg and Hereditary Grand Duchess of Mecklenburg- Schwerin.
She was the sixth child and fourth daughter of Frederick V, Landgrave of Hesse- Homburg and his wife Landgravine Caroline of Hesse- Darmstadt, in turn daughter of Louis IX, Landgrave of Hesse- Darmstadt.
Johannetta of Sayn-Wittgenstein (1632–1701)
Johannetta of Sayn-Wittgenstein (27 August 1632 – 28 September 1701), was Sovereign Countess of Sayn-Wittgenstein-Sayn-Altenkirchen from 1648 to 1701.
She was also Landgravine of Hesse-Braubach by marriage to John, Landgrave of Hesse-Braubach, and Duchess of Saxe-Marksuhl (later Saxe-Eisenach) by marriage to John George I, Duke of Saxe-Eisenach.
Prince Wilhelm of Hesse-Philippsthal-Barchfeld
Prince Wilhelm of Hesse(" Wilhelm Ernst Alexis Hermann"; 1 March 1905 – 30 April 1942) was German soldier and heir to the headship of the Hesse- Philippsthal line of the House of Hesse.
As a member of the House of Hesse he was styled" His Highness Prince Wilhelm of Hesse".
Philip, Landgrave of Hesse-Philippsthal
Philip of Hesse- Philippsthal( 14 December 1655 – 18 June 1721) was the son of William VI, Landgrave of Hesse- Kassel and Hedwig Sophia of Brandenburg.
He was the first landgrave of Hesse- Philippsthal from 1663 to 1721 and the founder of the fifth branch of the house of Hesse.
John of Hesse-Braubach
John of Hesse-Braubach (17 June 1609, Darmstadt - 1 April 1651, Ems) was a German nobleman and general.
He was the Landgrave of Hesse-Braubach.
His parents were Louis V, Landgrave of Hesse-Darmstadt and Magdalene of Brandenburg.
He was married on 30 September 1647 to Johannetta of Sayn-Wittgenstein, the daughter of Ernest, Count of Sayn-Wittgenstein-Sayn and Louise Juliane of Erbach.
The marriage was childless.
Johannetta later married Johann Georg I, Duke of Saxe-Eisenach.
Charles I, Landgrave of Hesse-Philippsthal
Charles I, Landgrave of Hesse- Philippsthal( 23 September 1682 – 8 May 1770) was a member of the House of Hesse and Landgrave of Hesse- Philippsthal from 1721 until his death.
Charles I, Landgrave of Hesse-Kassel
Charles of Hesse- Kassel( 3 August 1654 – 23 March 1730), of the House of Hesse, was the Landgrave of Hesse- Kassel from 1670 to 1730.
Moritz, Landgrave of Hesse
Moritz, Prince and Landgrave of Hesse(" Moritz Friedrich Karl Emanuel Humbert" 6 August 1926 – 23 May 2013) was the son of Prince Philip, Landgrave of Hesse, and the head of the House of Brabant and the German House of Hesse.
George II, Landgrave of Hesse-Darmstadt
George II of Hesse- Darmstadt,( 17 March 1605, in Darmstadt – 11 June 1661) was the Landgrave of Hesse- Darmstadt from 1626 to 1661.
He was the son of Ludwig V and Magdalene of Brandenburg.
He married Sophia Eleonore of Saxony on 1 April 1627.
From 1645 to 1648 he led the so- called" Hessenkrieg" against the Landgravine Amalie Elizabeth of Hesse- Kassel over the inheritance of the extinct line of Hesse- Marburg.
This conflict resulted in the loss of Hesse- Marburg to Hesse- Kassel.

Question: Who is John Of Hesse-Braubach's co-husband?
Answer: John George I, Duke of Saxe-Eisenach