Question: In which year was this province of the British colony for which Sir Robert Eden served as governor in 1741 established?

Context articles: List of colonial governors of New Hampshire
Baron Wakehurst
Sir Robert Eden, 1st Baronet, of Maryland
Colony of Natal
Cape Colony
New York Conspiracy of 1741
Colony of Tasmania
Province of Maryland
Robert Eden, 3rd Baron Auckland
Robert Hamilton (civil servant)

The territory of the present United States state of New Hampshire has a colonial history dating back to the 1620s.
 This history is significantly bound to that of the neighboring Massachusetts, whose colonial precursors either claimed the New Hampshire territory, or shared governors with it.
 First settled in the 1620s under a land grant to John Mason, the colony consisted of a small number of settlements near the seacoast before growing further inland in the 18th century.
 Mason died in 1635, and the colonists appropriated a number of his holdings.
 Thomas Roberts served as the last Colonial Governor of the Dover Colony before it became part of the Massachusetts Bay Colony.
 In 1641 the New Hampshire colonists agreed to be ruled by Massachusetts Bay Colony, which also claimed the territory.
 Massachusetts governed the New Hampshire settlements until 1680, when it became the royally chartered Province of New Hampshire.
 In 1686 the territory became part of the Dominion of New England, which was effectively disbanded in 1689 following the 1688 Glorious Revolution in England.
 After an interregnum under "de facto" rule from Massachusetts, Samuel Allen, who had acquired the Mason land claims, became governor.
 From 1699 to 1741 the governorships of New Hampshire and the Province of Massachusetts Bay were shared.
Baron Wakehurst, of Ardingly in the County of Sussex, is a title in the Peerage of the United Kingdom.
 It was created in 1934 for the Conservative politician Gerald Loder, fifth son of Sir Robert Loder, 1st Baronet (see Loder Baronets for earlier history of the family).
 He had previously represented Brighton in the House of Commons and was the creator of Wakehurst Place Gardens in Ardingly, West Sussex.
 His only son, the second Baron, was also a Conservative politician and served as Governor of New South Wales and later as Governor of Northern Ireland.
 s of 2010 the title is held by the latter's eldest son, the third Baron, who succeeded in 1970.
 As a descendant of Sir Robert Loder, 1st Baronet, he is also in remainder to this title.
Sir Robert Eden, 1st Baronet, of Maryland, 23rd Proprietary Governor of Maryland (c. 1741 – 2 September 1784) was a British colonial official and the last Royal Governor of Maryland.
 Although a popular governor and an able administrator, Eden's authority was overthrown by the events of the American Revolution, and in June 1776 he was invited by the Maryland Convention to leave for England.
 Eden was well-regarded at home and in the same year, 1776, he was made a baronet.
 He eventually returned to Maryland where he died in 1784 at the age of 43.
 He was buried in Annapolis and was succeeded in the baronetcy by his eldest son, Frederick, a noted author.
The Colony of Natal was a British colony in south-eastern Africa.
 It was proclaimed a British colony on 4 May 1843 after the British government had annexed the Boer Republic of Natalia, and on 31 May 1910 combined with three other colonies to form the Union of South Africa, as one of its provinces.
 It is now the KwaZulu-Natal province of South Africa.
The Cape of Good Hope, also known as the Cape Colony (Dutch: "Kaapkolonie" ), was a British colony in present-day South Africa and Namibia, named after the Cape of Good Hope.
 The British colony was preceded by an earlier Dutch colony of the same name, the "Kaap de Goede Hoop", established in 1652 by the Dutch East India Company.
 The Dutch lost the colony to Britain following the 1795 Battle of Muizenberg, but had it returned following the 1802 Peace of Amiens.
 It was re-occupied by the British following the Battle of Blaauwberg in 1806, and British possession affirmed with the Anglo-Dutch Treaty of 1814.
The Conspiracy of 1741, also known as the Negro Plot of 1741 or the Slave Insurrection of 1741, was a purported plot by slaves and poor whites in the British colony of New York in 1741 to revolt and level New York City with a series of fires.
 Historians disagree as to whether such a plot existed and, if there was one, its scale.
 During the court cases, the prosecution kept changing the grounds of accusation, ending with linking the insurrection to a Popish plot by Spaniards and other Catholics.
The Colony of Tasmania (more commonly referred to simply as "Tasmania") was a British colony that existed on the island of Tasmania from 1856 until 1901, when it federated together with the five other Australian colonies to form the Commonwealth of Australia.
 The possibility of the colony was established when the Parliament of the United Kingdom passed the "Australian Constitutions Act" in 1850, granting the right of legislative power to each of the six Australian colonies.
 The Legislative Council of Van Diemen's Land drafted a new constitution which they passed in 1854, and it was given Royal Assent by Queen Victoria in 1855.
 Later in that year the Privy Council approved the colony changing its name from "Van Diemen's Land" to "Tasmania", and in 1856, the newly elected bicameral parliament of Tasmania sat for the first time, establishing Tasmania as a self-governing colony of the British Empire.
 Tasmania was often referred to as one of the "most British" colonies of the Empire.
The Province of Maryland was an English and later British colony in North America that existed from 1632 until 1776, when it joined the other twelve of the Thirteen Colonies in rebellion against Great Britain and became the U.S. state of Maryland.
 Its first settlement and capital was St. Mary's City, in the southern end of St. Mary's County, which is a peninsula in the Chesapeake Bay and is also bordered by four tidal rivers.
Robert John Eden, 3rd Baron Auckland (10 July 1799 – 25 April 1870), styled The Honourable Robert Eden from birth until 1849, was a British clergyman.
 He was Bishop of Sodor and Man from 1847 to 1854 and Bishop of Bath and Wells from 1854 to 1869.
Sir Robert George Crookshank Hamilton KCB, (30 August 1836 – 22 April 1895) was the sixth Governor, and the Commander-in-Chief of the then British colony of Tasmania from 11 March 1887, until 30 November 1892, during which time he oversaw the ministries of two Tasmanian Premiers.
 Sir Philip Fysh (30 March 1887 to 17 August 1892) and Henry Dobson (17 August 1892 to 14 April 1894), both of whom, he curiously insisted on incorrectly referring to as Prime Minister.