Question: when did the king whom John Russell's Regiment of Guards formed following the restoration of born?

Context paragraphs:
John Russell's Regiment of Guards: John Russell's Regiment of Guards (later called the King's Royal Regiment of Guards) was an English infantry regiment formed following the Restoration of King Charles II to the throne in 1660.

35th Guards Air Assault Brigade: The brigade was formed on 1 October 1948 in Ryazan of the 111th Guards Airborne Regiment from elements of the 347th Guards Airlanding Regiment, part of the 11th Guards Airborne Division.  In April 1955, the division was disbanded and the regiment transferred to the 105th Guards Vienna Airborne Division.  In October 1956, the regiment was relocated to Rybinsk.  The division was transferred to the Turkestan Military District in August 1960 and the regiment was relocated to Osh.  In 1968, the regiment held joint exercises with the 351st Guards Airborne Regiment.  The regiment reportedly showed solid skills for action in the mountain wilderness and was praised by higher command.  In 1969, the regiment participated in tactical exercises with the troops of the Central Asian Military District and received a good evaluation.  Its performance in exercises with the 345th Independent Guards Airborne Regiment and the 351st Guards Airborne Regiment were also evaluated as good.  In 1973, it conducted exercises with the troops of the Central Asian Military District.  The regiment was to "destroy" a separate missile battalion of a tank division.  The regiment parachuted into four landing areas, which allowed them to immediately encircle the battalion's positions.  Army General Nikolay Lyashchenko observed the exercises and thanked the paratroopers for their actions.  The personnel of the regiment were systemically prepared for mountain warfare.  The brigade conducted airdropping exercises to seize the dominant mountain heights and passes in event of a war.  In 1967, the regiment's 1st Airborne Battalion was dropped on a plateau with an altitude of 3600 meters.

217th Guards Airborne Regiment: The regiment was formed on 1 October 1948 in Galyonki from elements of the 296th Guards Airlanding Regiment.  It was part of the 13th Guards Airborne Division.  In April 1955, the division was disbanded and the regiment transferred to the 98th Guards Airborne Division.  In 1965, for its performance in exercises on Sakhalin, the regiment received thanks from the USSR Ministry of Defense.  At the time, the regiment was commanded by Major Gennady Margelov.  On 22 February 1968, the regiment was awarded the Order of Kutuzov 3rd class.  Beginning on 25 July 1969, the regiment moved to Bolhrad.  119 personnel of the regiment fought in the Soviet–Afghan War.  The regiment deployed to Oktemberyan between 23 and 29 March 1988.  On 21 June it deployed in Stepanakert, which it left on 2 August.  It was deployed to Yerevan on 21 September and returned to Bolhrad on 16 November.  On 24 May 1989, it went back to Yerevan, which it left on 25 August.  It deployed to Baku on 3 October and remained there until 18 October.  While paratroopers were being airlifted out of Baku on 18 October, an Il-76MD crashed near the city, killing 9 crew members and 48 paratroopers from the regiment.  On 16 January 1990 it again deployed to Baku and left there on 16 March.  As a result of the Dissolution of the Soviet Union, elements of the regiment became the Ukrainian 25th Airborne Brigade.  Beginning on 23 April 1993, the regiment moved to Ivanovo, where it is still based today.

Lord Wentworth's Regiment: Lord Wentworth's Regiment was a regiment of infantry raised during the exile of King Charles II during the Interregnum.  Formed as the Royal Regiment of Guards in 1656 at Bruges under the command of the Earl of Rochester, it was made up of men who remained loyal to the King and had followed him into exile.  When Rochester died in February 1658 command passed to Thomas Wentworth, 5th Baron Wentworth.  The regiment served as part of the Spanish Army during the Franco-Spanish War and the concurrent Anglo-Spanish War in the Spanish Netherlands and saw action at the Battle of the Dunes (1658) under the command of Wentworth, before accompanying the King back to England to reclaim the throne at the Restoration in 1660.  In 1665, the regiment was amalgamated with John Russell's Regiment of Guards to form the 1st Regiment of Foot Guards.

1st Guards Division (Imperial Japanese Army): The Imperial Japanese Army's 1st Guards Division (近衛第1師団 , Konoe Dai-ichi Shidan ) was formed from the Guards Mixed Brigade in June 1943 and a new Guards Regiment, the 6th, was added, with the 1st Guards Cavalry Regiment, 1st Guards Field Artillery Regiment, 1st Guards Engineer Regiment and 1st Guards Transport Regiment, and other support units.

103rd Guards Airborne Division: The original 103rd Guards Rifle Divisionwas formed from the previous 13th Guards Airborne Division on 18 December 1944 in Bykhaw.  The 3rd Guards Airborne Brigade became the 317th Guards Rifle Regiment, the 5th Guards Airborne Brigade became the 322nd Guards Rifle Regiment and the remaining rifle units became the 324th Guards Rifle Regiment.  The division became part of the 37th Guards Rifle Corps and in February were embarked on trains and moved to positions south of Budapest.  Between 16 March and 1 April, the division advanced along Lake Balaton after participating in the repulse of Operation Spring Awakening.  On 23 March, the division helped capture Veszprém, on 26 March Devecser, on 28 March Sárvár and finally Szombathely on 29 March.  On 2 April, the division captured Gloggnitz and then fought in Vienna.  After the capture of Vienna in the Vienna Offensive, the division advanced westward, pursuing retreating German units.

Charles II of England: Charles II (29 May 1630 – 6 February 1685) was king of England, Scotland and Ireland.  He was king of Scotland from 1649 until his deposition in 1651, and king of England, Scotland and Ireland from the restoration of the monarchy in 1660 until his death.

31st Guards Airborne Division: The 31st Guards Airborne Division was formed on 15 October 1948 from the 298th Guards Airborne Regiment of the 100th Guards Airborne Division in Novohrad-Volynskyi, part of the 39th Guards Airborne Corps.  The division inherited the Order of Kutuzov from the regiment.  Its 381st Guards Air Landing Regiment was converted to an airborne regiment at some point.  The division's Separate Air Landing Security Company was disbanded in 1949.  On 15 November 1953, its 716th Separate Guards Communications Company became a battalion, along with the Separate Medical & Sanitary Company.  The Separate Guards Antitank Battalion and Separate Guards Reconnaissance Company were disbanded on the same date.  On 30 April 1955, the 109th Guards Airborne Regiment became part of the division after its original parent unit, the 100th Guards Airborne Division was disbanded.  The 152nd Separate Tank Destroyer Battalion was activated on the same day.

Grenadier Guards: The Grenadier Guards (GREN GDS) is an infantry regiment of the British Army.  It is the most senior regiment of the Guards Division and, as such, is the most senior regiment of infantry.  It is not, however, the most senior regiment of the Army, this position being attributed to The Life Guards.  Although The Coldstream Guards were formed before The Grenadier Guards, the regiment is ranked "after" the Grenadiers in seniority as, having been a regiment of the New Model Army, the Coldstream served the Crown for four fewer years than the Grenadiers (the Grenadiers having formed as a Royalist regiment in exile in 1656 and the Coldstream having sworn allegiance to the Crown upon the Restoration in 1660).

1st King's Dragoon Guards: The 1st King's Dragoon Guards was a cavalry regiment in the British Army.  The regiment was raised by Sir John Lanier in 1685 as the 2nd Queen's Regiment of Horse, named in honour of Queen Mary, consort of King James II.  It was renamed the 2nd King's Own Regiment of Horse in 1714 in honour of George I.  The regiment attained the title 1st King's Dragoon Guards in 1751.  The regiment served as horse cavalry until 1937 when it was mechanised with light tanks.  The regiment became part of the Royal Armoured Corps in 1939.  After service in the First World War and the Second World War, the regiment amalgamated with the 2nd Dragoon Guards (Queen's Bays) in 1959 to form the 1st The Queen's Dragoon Guards.

Supporting paragraphs: John Russell's Regiment of Guards Charles II of England
Answer: 29 May 1630