He married firstly in 1333 to Elizabeth d'Avensnes. Her lineage is from Holland as her father was Count Guillaume III of Holland.
Elizabeth and Robert had 4 sons.
John Holland of Thorpe b 1333 d 1373
Sir Robert Holand b 1334 d 1373 he married Alice de Lisle
Thomas Holand b 1335 d 1405
Gilbert Holand b 1336
Robert de Holand, 2nd Lord (Baron) Holand; b. c 1312; knighted by 1336, served in Hundred Years War (thought to have been at Crecy); m. Elizabeth, and d. 16 March 1372/3. [Burke's Peerage]
BARONY OF HOLAND (II)
ROBERT (DE HOLAND), LORD HOLAND, son and heir, was under age at his father's death, being then aged 16. His marriage was quickly granted to his mother, who offered 500 marks. He received the custody of Chelveston, Northants, in 1333 in reward for his services in the war with Scotland. He proved his age and had livery of his lands in 1335, and next year is described as a knight. He fought in the wars with France, and, being in the retinue of the Earl of Warwick in April 1346, was probably present at Crécy, 26 August 1346, and in Nov. 1347 he is stated to have served in the King's retinue.
In March 1347 he assisted Sir John de Dalton to abduct Margery de la Beche from Beaumes Manor, near Reading. In 1355 he again went overseas. He was summoned to a Council 25 February 1341/2, and to Parliament from 1 June 1363 till his death. He appears to have resided chiefly in Northants, where he was appointed on various Commissions judicial and military, and in 1360 was a guardian of Garendon Abbey. He added to the endowment of Upholland Priory in 1367.
He married Elizabeth, who appears to have predcceased him. He died 16 March 1372/3, at Halse or Hawes, Brackley, and was buried in St. James's Chapel, Brackley.
Note: Elizabeth has been tentatively identified --see notes under her.Robert married Elizabeth D' AVESNES of Hainault, daughter of Willem III D' AVESNES Comte de Hainault and Trude VAN DER POELE. (Elizabeth D' AVESNES of Hainault was born about 1315 in Mons, Hainault, Belgium and died before 16 Mar 1372-1373.)
Sir Robert Holand, 2nd baron, summoned to parliament from 25 February, 1342, to 6 October, 1372. This nobleman was engaged for several years in the French wars of King Edward III, part of the time under Thomas de Beauchamp, Earl of Warwick, and the remainder in the retinue of his brother, Thomas Holland.
His lordship d. in 1373, leaving his grand-dau (dau. and heir of his eldest son Robert, who had predeceased him), Maud Holland, then seventeen years of age, his sole heir, who m. John Lovel, 6th Lord Lovel, of Titchmersh, and carried the Barony of Holland into that family.
[Sir Bernard Burke, Dormant and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 279, Holand, Barons Holand]
At some point Robert married Margaret de Hetton. Perhaps Elizabeth had died leaving the young children and he needed a replacement, because they had two daughters and it appears that many researchers have indicated that one of those daughters Margaret born 1335 was the daughter of Elizabeth, however his daughter Jane from Margaret was born in 1338. It was common to name a daughter after her mother hence Margaret can be assumed to be the daughter of Margaret de Hetton.
Margaret was born 1335 and died 1365 She married Sir Marmaduke de Lumley.
*It should be noted that many researchers have confused her with her aunt Margaret.
Margaret was born in 1314. She was the daughter of Alan of Buthel Hetton
She married secondly after the death of Sir Robert, to Sir William Molyneux
Sir William's 2nd wife was lady Margaret, the widow of Sir Robert Holand of Enkeston, Knight (brother to Sir Thomas Holand, of Bushell, Knight of the Garter) and daughter and heir of Sir Alan Heyton, of Bushell, Knight.
~ Collin's The English Baronetage, Vol. I pp. 145-146
Sir William Molynex of Sefton
Sir Thomas Molynex of Kuerdale, Constabel of Chester, and slain by Sir Thomas Mortimer at the Battle of Radcot Bridge, 1383
Sir John Molyneux of Crosby, returned to the Great Council at Westminster 17 Edward II
Richard Molyneux, Parson of Sefton
~Memoir of the Molineux Family, pgs. 4-5
The Molyneaux Ancestors
Prior to the Norman colonization of Neustria genetic evidence suggests the family was of Norse or Viking origin. The Molyneux family belongs to haplogroup I2a2a, which is about 30,000 years old tracing its roots to Scandinavia
Historians know the de Moulins came from Molineaux-sur-Seine, near Rouen, in Normandy where they were guardians of Château de Robert-le-Diable also known as Château de Moulineaux in the 10th century.
The earliest known common ancestor of the family is recorded to be Robert de Moulins of Château de Moulineaux in Molineaux-Sur-Seine, follower of William of Normandy. Although dismissed as false by most genealogists, family folklore states he was the illegitimate son of Peter Abelard and Héloïse d’Argenteuil, Astrolabe, with a changed name.Some genealogists assert that Robert de Moulins was a legendary figure due to lack of sourced evidence of his existence.
Seine near present day Molineaux-sur-Seine, France prior to the 1066 invasion of England, although no archeological evidence exists to support the claim.
Other sources claim the de Moulin family originally came from Moulins, France and traveled to Normandy where they joined the Norman army and founded the mill on the Seine. Wherever their origin, Robert de Moulins' son, William (Guillaume de Moulines Sir de Falaise as listed in many sources where Companions of William the Conqueror are noted) settled in Lancashire and was granted lands by Duke William of Normandy, his liege Lord, for his assistance at the Battle of Hastings in 1066.
He had two sons William and Vivian de Moulins. Some sources state Vivian as William I's brother that also fought in the initial battle, but neither can be confirmed. Roger the Poitevin who possessed large tracts of land in Lancashire in what was then called inter Mersam et Ripam, that is, "between the Mersey and the Ribble" by gift of the crown gave Molyneux large land holdings and the manors of Septon (Sefton), Thornton, Cuerden, ten carucates and a half of land, at the service of half a knight's fee.
William Molyneux made Septon his chief seat and was succeeded by Vivian de Molyneux.
They were initially to be granted the Manor of Little Crosby, later Ince Blundell Hall, which had been held by one Uctred until 1066. By 1212 it was owned by Richard de Molyneux of Sefton before being turned over to the Blundell family.
The Molyneuxs later owned most of the districts of Speke and Rainhill.With much current archeological and written evidence, the Royalist gentry family held a large moated manor, a corn mill on the River Alt, and St. Helen's Church at Sefton without interruption from about 1100 to 1700.
From there the Viscounts turned Earldom moved to Croxteth Hall. Of the Sefton Molyneux family, Sir Richard (d.1290) and Sir William Molyneux (d.1320), knights of the Crusades, are entombed within the church, and are the its oldest inhabitants.
Their effigies now lie beneath an arch moulding set into the wall in the Molyneux chapel, which is outside of the 14th-century church walls. By the 14th century the Molyneux family had become so large that it split into three main branches; the Lancashire line, who became the Earls of Sefton, the Nottingham line, and the Calais line, from family still left over in Normandy.
For this part of our linage, Jane Holland is the 16th great grandmother. She married William Molyneux the eldest son of her step father.
Jane de HOLAND was born about 1338 in Upholland, Lancashire, Eng.
She died before 1372 at the age of 34