Caution: Robert Brooke is part of a family associated with London and Sussex and prominent in Maryland history and should not be confused with Robert Brooke who is associated with a family in Yorkshire, England.
Robert Brooke was born in Whitemarsh, Southampton on June 23, 1602. His parents were Hon. Thomas Brooke (1561–1612) of Whitechurch and Susan Forster -- daughter of Sir Thomas II Forster (1548–1612), Justice of the Court of Common Pleas, and Susan Foster of Iden, Sussex; and sister of Sir Robert Foster, Lord Chief Justice
Scharf, by contrasts, wrote that he was born in London on the 3rd of June, 1602.
The Brooke family arms were recorded in the Visitation of Hampshire, 1634.
He matriculated at Wadham College, Oxford University on April 28, 1618.
He was admitted to Orders, but it is doubtful whether he was ever the incumbent of a parish.
Their documented children were: 
1. Baker Brooke (1628–1679)
2. Mary Brooke (1630 - ca. 1650), d. young in England.
3. Maj. Thomas Brooke Sr., Esq. (1632–1676),
After Mary Baker died in 1634, Robert wed Mary Mainwaring (1611– 63) on May 11, 1635 in England. She was the second daughter of Roger Mainwaring (1582–1653), Dean of Worcester and Bishop of St David's, and Cecilia Proper.
Charles Brooke (1636–1671), Single.
Roger Brooke (1637–1700) m.1 Dorothy Neale, (p. Cpt. James Neale (c.1615-1684) and Anna Maria Gill); m.2. Mary Wolseley, (p. Walter Wolseley and Mary Beauchamp)
Robert Brooke (1639–1667) m. Elizabeth Thompson (p. William Thompson and Mary Bretton)
John Brooke (1640–1677) m. Rebecca Isaacs
Mary Brooke (1642)
William Brooke (1643)
Anne Brooke (1645) m. Christopher Beanes (ca. 1650-1696)
Francis Brooke (1648–1671)]]. Single.
Basil Brooke (d. 1651 infancy)
Henry Brooke (1655–1672). Single.
Eliza Brooke (1655) m. Cpt. Richard Smith, Jr. (ca. 1660-1714), son of Lt. Richard Smith, Sr., Gent. (d.ca. 1690) and Eleanor.
On September 20, 1649, Brooke was issued with a commission as Commander of "one whole county" (in the province of Maryland) "to be newly set forth, erected, &c". He was to receive a grant of 2,000 acres (810 hectares) for every ten persons he transported. Brooke is said to have emigrated (June 1650) aboard his own ships and at his own expense, along with his wife, ten children, 28 servants, and a pack of hounds.
On July 22, 1650, along with his two sons, Baker and Thomas, Sr., he took the oath of Fidelity to the Proprietor. His sons each received separate grants of land in various counties of Maryland. Robert Brooke was constituted as Commander of newly formed Charles County in Maryland on October 30, 1650.
Robert Brooke, son of Thomas and Susan Forster Brooke, emigrated to Maryland in 1650 with his (second) wife, Mary Mainwaring, ten children and 28 servants. 
On the 29th of June 1650, Robert Brooke arrived in Maryland with his wife and ten children.
Scharf lists the names of the servants. Robert Brooke was then forty eight years of age. He was the first settler on the Patuxent, and located himself about twenty miles up the river, at a place which was afterwards known as Delabrook, and in 1652 removed to an adjoining estate, which he named Brooke Place.
After his arrival in Maryland three children were born, -- Basil who died on the day of his birth, and Eliza and Henry, twins.
Soon after reaching Maryland, Robert Brooke was appointed commander of Charles County, and was chosen by Cromwell’s commissioners Governor of Maryland.
In 1652, under the Cromwellian Government, Brooke was made governor, and served in this capacity from March 29 to July 3, 1652. His co-operation with the Bennett-Claiborne Puritan faction brought him the displeasure of Lord Baltimore and the loss of his proprietary offices. Later he allied himself with the conservative Catholic Party.
Like most of the wealthy emigrants who came to Maryland under the patronage of the Proprietor, Brooke amassed many thousands of acres of land.
He constructed three large estates, each named for himself:
By the time of his death on July 20, 1655, Brooke is said to have accumulated 8,000 acres (3,200 hectares) of land.
Robert Brooke sailed from England with his pack of hunting dogs, which were the root of several strains of American Foxhounds. Dogs of this bloodline remained in the Brooke family for nearly 300 years. George Washington received French Foxhounds, Grand Bleu de Gascogne, (which look much like an American Bluetick Coonhound) as a gift from the Marquis de Lafayette. Many of the dogs Washington kept were descended from Brooke's, and when crossed with the French hounds, helped to create the present day American Foxhound
Robert Brooke died on the 20th of July, 1656, and his widow died on the 29th of November, 1663.
He is buried in the Brooke Place Manor Cemetery, Saint Leonard, Calvert County, Maryland.
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