13 Apr 1360 Black Monday Hailstorm (Chartres)

On 13 Apr 1360 a freak weather event known as Black Monday Hailstorm occurred as the army of Edward III King England (47) were camped outside Chartres. Guy Beauchamp was killed. Thomas Beauchamp 11th Earl Warwick (47) , William Bohun 1st Earl Northampton (50) , Henry Plantagenet 1st Duke Lancaster (50) , Edward "Black Prince" Plantagenet Prince Wales (29) and Walter Mauny were present. Around one thousand English were killed, with up to six thousand horses. Edward III King England (47) believed the event to be an Act of God and proceeded to negotiate with the French resulting in the Treaty of Bretigny.

On 28 Apr 1360 Guy Beauchamp died from injuries received during the Black Monday Hailstorm.

24 Oct 1360 Treaty of Brétigny

On 24 Oct 1360, three weeks after the Black Monday Hailstorm, Edward III King England (47) and John "The Good" II King France, and their eldest sons Edward "Black Prince" Plantagenet Prince Wales (30) and the future Charles V King France, ratified the Treaty of Brétigny at Calais. Louis Valois-Anjou I Duke Anjou and John Valois 1st Duke Berry were given as hostages. Philip "Bold" Valois-Burgundy II Duke Burgundy was ransomed. The treaty confirmed lands held by Edward III King England (47) including Aquitaine. John "The Good" II King France was ransomed for three million écus being released after the payment of the first third.

Hundred Years War: Breton War of Succession

29 Sep 1364 Battle of Auray

On 29 Sep 1364 Battle of Auray decided the Breton Succession in favour of John Montfort V Duke Brittany. The Breton and English army was commanded by John Chandos and included William Latimer 4th Baron Latimer Corby (34) , Miles Stapleton (44) and Hugh Calveley. Charles "Saint" Châtillon Duke Brittany was killed. Bertrand Geusclin surrendered. [Auray].

Castillian Civil War

03 Apr 1367 Battle of Nájera

On 03 Apr 1367 the forces of Peter "Cruel" I King Castile commanded by Edward "Black Prince" Plantagenet Prince Wales (36) defeated the army of Henry "Fratricide" II King Castile at the Battle of Nájera at Nájera. The English forces included John of Gaunt 1st Duke Lancaster (27) , John Ferrers 3rd Baron Ferrers Chartley (36) , William Scrope (42) , Peter Courtenay (21) , John Devereux 1st Baron Devereux (30) and Thomas Banastre. The forces of Henry "Fratricide" II King Castile included Bertrand Geusclin. The battle achieved little since Bertrand Geusclin escaped.

14 Mar 1369 Battle of Montiel

On 14 Mar 1369 the army of Henry "Fratricide" II King Castile defeated that of his half-brother Peter "Cruel" I King Castile at the Battle of Montiel. Henry "Fratricide" II King Castile's army was commanded by Bertrand Geusclin. Peter "Cruel" I King Castile escaped to the castle of Montiel.

23 Mar 1369 Death of Peter I King Castile (Montiel)

On 23 Mar 1369 Peter "Cruel" I King Castile was murdered by his half-brother Henry "Fratricide" II King Castile outside the wall of the castle of Montiel. Henry "Fratricide" II King Castile succeeded II King Castile [Death of Peter I King Castile].