Jennings married John Churchill ( the future Duke of Marlborough ) in about 1678.

In April 1678, Churchill ( accompanied by his friend and rising politician, Sidney Godolphin ), departed for The Hague to negotiate a convention on the deployment of the English army in Flanders.

When Churchill returned to England at the end of 1678 he found grievous changes in English society.

The 1st Duke's daughters included Lady Elizabeth Cavendish ( c. 1627 – 14 June 1663 ), who married the John Egerton, 2nd Earl of Bridgewater and had issue, and Lady Frances Cavendish ( before 1641 – 15 August 1678 ), who married the 2nd Earl of Bolingboke.

# State Princess Yong Mu ( 固倫雍穆長公主 ), personal name Yatu ( 雅圖 ) ( 1629 – 1678 ) married her cousin Birtakhar in 1641.

On 12 March 1678, he married Elizabeth Tollemache ( daughter of Elizabeth and Lionel Tollemache, 3rd Baronet of Helmingham ) at Edinburgh, Scotland.

* Charlotte Lee, Lady Baltimore ( 13 March 1678 ( Old Style ) – 22 January 1721 ), first married to Benedict Calvert, 4th Baron Baltimore and secondly to Christopher Crowe, Consul of Leghorn.

On December 5, 1678 he married Abigail Gardner, granddaughter of Thomas Gardner ( Roxbury ).

He married Marie Anne de Bourbon ( 1678 – 1718 ), a daughter of Henri Jules, Prince of Condé and granddaughter of Le Grand Condé.

# Luise Christiane ( 8 October 1608 – 19 December 1678 ), married on 4 July 1627 Marquis Philippe de Conflans

The eldest daughter of Elizabeth and Lionel, also named Elizabeth ( 1659 – 1735 ), married Archibald Campbell, 1st Duke of Argyll in Edinburgh in 1678.

On 30 July 1678, Lord Willougby married Mary Wynn ( d. 20 September 1689 ), a Welsh heiress and direct descendent of the princely house of Aberffraw.

* Elizabeth Brydges ( 1619 – 1678 ), married her stepbrother, James Tuchet, 3rd Earl of Castlehaven.

His third wife Marie Anne de la Grande d ' Arquien he married in July 1678 in Lwów.

Abraham married Tryntie Melchior Abrahams ( 1611 – 1678 ) on December 7, 1629 in Haarlem.

He married in 1678 to Maria Anna Josepha, Archduchess of Austria.

* Lady Margaret Douglas ( 1610 – 1678 ), married the 1st Marquess of Argyll and had issue.

In 1678 he married the former Earl's widow, Mary Campbell, the Countess of Caithness, an economical step which saved him his obligation to pay her 12, 000 marks a year.

Bowne became a merchant and married well, his wife Hannah Feake ( ca. 1637 – 1678 ), whom he married in 1656, being a great-niece of Governor John Winthrop of Massachusetts.

* Elizabeth Brydges ( 1619 – 1678 ), married her stepbrother, James Tuchet, 3rd Earl of Castlehaven.

His first wife was Anne Villiers ( before 1633-30 November 1688 ), daughter of Sir Edward Villiers and his wife Lady Frances Howard, daughter of the 2nd Earl of Suffolk, whom he married on 1 February 1678.

He had three children by his first marriage, including Lady Mary Weston ( 2 January 1603-after August 1678 ), who married the 2nd Lord Aston of Forfar in 1629, and Lady Elizabeth Weston, who married John Netterville, 2nd Viscount Netterville He had seven children by his second marriage, including his son Thomas, who later succeeded as 4th Earl, and Lady Anne Weston, the first of the four wives of Basil Feilding, 2nd Earl of Denbigh.

In 1678 he married Lucy Domville (?– 1691 ), the youngest daughter of Sir Wiliam Domville the Attorney-General for Ireland.

When she became pregnant, her marriage was announced publicly ( on 1 October 1678 ), and Sarah retired from the court to give birth to her first child, Harriet, who died in infancy.

* 1678 First recorded execution at Kennington Common was that of Sarah Elston who was burnt for murdering her husband on the 24th April.

* April 4 – Daniel Neal, English historian ( b. 1678 )

* April 17 – Joseph I, Holy Roman Emperor ( b. 1678 )

* April 19 – Peter Lacy, Irish-born Russian Field marshal ( b. 1678 )

An attempt by William to convince his uncle to enter the war against Louis failed in April ; Charles would till the end of that war in 1678 try to negotiate between the two parties, at times pretending to really consider a conflict with France, when such pretence was beneficial to him.

Joseph I ( 26 July 1678 – 17 April 1711 ), Holy Roman Emperor, King of Bohemia, King of Hungary, King of the Romans was the elder son of Emperor Leopold I and his third wife, Eleonor Magdalene of Neuburg.

While he may never have used the term himself, the origin of the " muckraker " is attributed to President Theodore Roosevelt, who, during a speech delivered on April 14, 1906, and on the occasion of dedicating the U. S. House of Representatives office building, drew on a character from John Bunyan ’ s 1678 classic, Pilgrim ’ s Progress, saying:

Count Rutger von Ascheberg ( June 2, 1621 – April 17, 1693 ) was a soldier, officer and civil servant in Swedish service, being appointed Lieutenant General in 1670, General in 1674, Field Marshal in 1678, Governor General of the Scanian provinces, in 1680, and Royal Councilor in 1681.

The war continued in northern New England ( primarily in Maine at the New England and Acadia border ) until a treaty was signed at Casco Bay in April 1678.

Sir Edmund Andros, appointed by James II as governor of New York, negotiated a treaty with some of the northern Indian bands in Maine on April 12, 1678, as he tried to establish his New York-based royal power structure in Maine's fishing industry.

Oates claimed he had been at a Jesuit meeting held at the White Horse Tavern in the Strand, London on April 24, 1678.

Benbow entered the Royal Navy on 30 April 1678, aged 25 years.

* 1678 John Masters and Gabriel Dean, highwaymen, executed on 24th April.

Daniel Neal ( 14 December 1678 – 4 April 1743 ) was an English historian.

On 5 April 1678 Prince Apafi issued an ambiguous declaration to the people of Hungary: he announced that himself together with the Polish and the French kings took up the arms against " the heavy yoke of oppression " and recommended " the submission to the mighty Turkish Emperor with a reasonable mind and sharp eye ".

No roles are recorded for her between March 1678 and April 1688.

Francis Seymour, 5th Duke of Somerset ( 17 January 1658 – 20 April 1678 ), known as 3rd Baron Seymour of Trowbridge between 1665 and 1675, was an English peer.

Walter Aston, 2nd Lord Aston of Forfar ( 6 April 1609 – 23 April 1678 ) was a son of Walter Aston, 1st Lord Aston of Forfar, and Gertrude Sadleir, daughter of Sir Thomas Sadleir of Standon, Hertfordshire

He died April 23, 1678, and was succeeded by his eldest son Walter Aston, 3rd Lord Aston of Forfar.

Abraham Darby I ( 14 April 1678 – 8 March 1717 ) was the first, and most famous, of three generations with that name in an English Quaker family that played an important role in the Industrial Revolution.

Lewis was born to John ( 1678 – 1762 ) and Margaret Lynn Lewis ( 1693 – 1773 ) in County Donegal, Ireland on April 27, 1718.