Albrecht of Hanau-Münzenberg
Albert of Hanau- Münzenberg( 12 November 1579 – 19 December 1635 in Strasbourg) was the younger son of Philip Louis I of Hanau- Münzenberg( 1553- 1580) and his wife, Countess Magdalena of Waldeck( 1558- 1599).
The only sons of his parents to reach adulthood were Albert and his elder brother Philip Louis II.
Albert's son John Ernest was the last male member of the Hanau- Münzenberg line of the House of Hanau.
Philipp Moritz, Count of Hanau-Münzenberg
Philipp Moritz of Hanau- Münzenberg( 25 August 1605 – 3 August 1638 in Hanau) succeeded his father as Count of Hanau- Münzenberg in 1612.
Philipp Ludwig I, Count of Hanau-Münzenberg
Philipp Ludwig I, Count of Hanau- Münzenberg( 21 November 1553 – 4 February 1580) succeeded his father in the government of the County of Hanau- Münzenberg in 1561.
Johanna of Hanau-Münzenberg
Countess Johanna of Hanau-Münzenberg (1610 – 13 September 1673) was a daughter of Count Albert of Hanau-Münzenberg-Schwarzenfels and Countess Ehrengard of Isenburg (1577 – 1637).
Hanau-Münzenberg-Schwarzenfels was a cadet branch of Hanau-Münzenberg.
Reinhard IV, Count of Hanau-Münzenberg
Count Reinhard IV of Hanau- Münzenberg( born: 14 March 1473 – died: 30 January 1512) succeeded in 1500 his father Philipp I of Hanau- Münzenberg( 1449 – 1500) in the government of the County of Hanau- Münzenberg.
He served as co-regent from 1496 onwards.
Philipp III, Count of Hanau-Münzenberg
Count Phillip III of Hanau- Münzenberg( 30 November 1526 – 14 November 1561) ruled the County of Hanau- Münzenberg from 1529 until his death.
Adriana of Nassau-Dillenburg
Adriana of Nassau-Dillenburg (7 February 1449 – 15 January 1477) was a daughter of Count John IV of Nassau-Dillenburg and his wife Maria of Loon-Heinsberg.
She died on 15 January 1477 and was buried in the church of St. Mary in Hanau.
On her epitaph, she is depicted in a praying position towards the (no longer extant) high altar.
This epitaph and her grave stone have been preserved very well.
Margaret of Hanau-Münzenberg
Countess Margaret of Hanau-Münzenberg (6 April 1471 – 5 September 1503 in Worms) was a daughter of Count Philip I of Hanau-Münzenberg and his wife, Countess Adriana of Nassau-Dillenburg.
Her family negotiated her entry into the Liebenau monastery as early as 1477, and she was accepted there as a nun.
Correspondence between her and her father has been preserved, which shows that she still took an interest in the affairs of her family after she entered the convent.
Philipp Ludwig III, Count of Hanau-Münzenberg
Count Philipp Ludwig III of Hanau- Münzenberg( in Hanau – 12 November 1641 in The Hague) was the last count of the main Hanau- Münzenberg line of the House of Hanau.
After his death, the Hanau- Münzenberg- Schwarzenfels line inherited Hanau- Münzenberg.
Countess Catharina Belgica of Nassau
Countess Catharina Belgica of Nassau (31 July 1578 – 12 April 1648) was a countess of Hanau-Münzenberg by marriage to Philip Louis II, Count of Hanau-Münzenberg, and regent of Hanau-Münzenberg from 1612 until 1626.
She was the third daughter of William the Silent and his third spouse Charlotte of Bourbon.

Question: Who is the maternal grandmother of Margaret Of Hanau-Münzenberg?
Answer: Maria of Loon-Heinsberg