Gerard II, Count of Guelders
Gerard II was Count of Guelders from March 1129 until his death on October 24, 1131.
He was the son of Gerard I, Count of Guelders.
Around 1116, Gerard married Ermgard of Zutphen, daughter of Otto II, Count of Zutphen and Judith of Arnstein.
They had two children:
Priscilla Pointer
Priscilla Marie Pointer( born May 18, 1924) is an American stage, film and television character actress.
She began her career in the theater, including productions on Broadway.
Later, Pointer moved to Hollywood to act in films and on television.
She is the mother of Amy Irving, therefore making her the former mother- in- law of filmmakers Steven Spielberg and Bruno Barreto and the mother- in- law of documentary filmmaker Kenneth Bowser, Jr.
Reginald II, Duke of Guelders
Reginald II of Guelders, called" the Black"( c. 1295 – 12 October 1343), was Count of Guelders, and from 1339 onwards Duke of Guelders, and Zutphen, in the Low Countries, from 1326 to 1343.
He was the son of Reginald I of Guelders and Marguerite of Flanders.
Marian Shields Robinson
Marian Lois Robinson( née Shields; born July 29, 1937) is the mother of Michelle Obama, former First Lady of the United States, and Craig Robinson, a basketball executive, and the mother- in- law of former U.S. President Barack Obama.
Otto I, Count of Guelders
Otto I of Guelders (1150–1207) was a Count of Guelders and Zutphen from 1182 until his death in 1207.
He was a son of Duke Hendrik of Guelders and Agnes of Arnstein.
He married Richardis of Bavaria in 1184.
Richardis was a daughter of Otto
I Wittelsbach, Duke of Bavaria.
Richardis of Bavaria
Richardis of Bavaria (1173 in Kelheim – 7 December 1231 in Roermond) was a German noblewoman.
She was a daughter of Count Palatine Otto I of Bavaria, who later became the first Wittelsbach "Duke" of Bavaria, and his wife Agnes of Loon.
Otto IV, Count of Scheyern
Otto V, Count of Wittelsbach (– 4 August 1156), also called Otto IV, Count of Scheyern, was the second son of Eckhard I, Count of Scheyern.
Otto named himself "Otto of Wittelsbach", after Wittelsbach Castle near Aichach.
He served Henry V, Holy Roman Emperor, in his first Italian Expedition in 1110–1111.
Emperor Henry V already addressed him as Otto Count of "Witlinesbac" in a document in 1115.
From 1120 onwards, he was Count palatine of Bavaria.
Otto II, Count of Guelders
Otto II, Count of Guelders( Dutch: Otto II, Graaf van Gelre) was a nobleman from the 13th century.
He was the son of Gerard III, Count of Guelders and Margaretha of Brabant.
Reginald I of Guelders
Reginald I of Guelders( 1255 – Monfort, October 9, 1326) was Count of Guelders from January 10, 1271 until his death.
He was the son of Otto II, Count of Guelders and Philippe of Dammartin .< br>
In 1276 he married Irmgard of Limburg, only daughter and heiress of Waleran IV, Duke of Limburg.
In 1279 he became Duke of Limburg and when Irmgard died childless in 1283, he became the only ruler of the Duchy of Limburg.
He lost this title after losing the Battle of Woeringen in 1288.
In 1286 he remarried Margaret of Flanders( 1272 – 1331), daughter of Guy, Count of Flanders from his second marriage, with Isabelle of Luxembourg.
They had 5 children: Financially ruined after the Battle of Woeringen, Guelders came under the influence of his father- in- law, the Count of Flanders.< br>
From 1318, he was replaced by his son, who imprisoned his father in 1320 in the Montfort Castle.
Reginald I died here 6 years later.
Otto I (bishop of Utrecht)
Otto van Gelre( 1194 – 1 September 1215) was bishop of Utrecht from 1212 to 1215.
Otto van Gelre was the son of Otto I, Count of Guelders and Richardis of Bavaria.
He was appointed bishop at a young age with the support of Guelders and the Hohenstaufen.
He was a loyal supporter of Guelder's interests in the Bishopric of Utrecht.
He died at Voorthuizen at Elten, on the way to Rome.

Question: Who is the mother-in-law of Otto I, Count Of Guelders?
Answer: Agnes of Loon