The 770s decade ran from January 1, 770, to December 31, 779.
The 760s decade ran from January 1, 760, to December 31, 769.
The 750s decade ran from January 1, 750, to December 31, 759.
The 610s decade ran from January 1, 610, to December 31, 619.
The 630s decade ran from January 1, 630, to December 31, 639.
The 640s decade ran from January 1, 640, to December 31, 649.
The 650s decade ran from January 1, 650, to December 31, 659.
The 660s decade ran from January 1, 660, to December 31, 669.
The 680s decade ran from January 1, 680, to December 31, 689.
Year 635 (DCXXXV) was a common year starting on Sunday of the Julian calendar. The denomination 635 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
The 340s decade ran from January 1, 340, to December 31, 349.
Year 715 (DCCXV) was a common year starting on Tuesday of the Julian calendar. The denomination 715 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 663 (DCLXIII) was a common year starting on Sunday of the Julian calendar. The denomination 663 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Year 668 (DCLXVIII) was a leap year starting on Saturday of the Julian calendar. The denomination 668 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Heraclius, known by the diminutive Heraclonas or Heracleonas, and sometimes called Heraclius II, was the son of Heraclius and his niece Martina. His father had stipulated in his will that both of his sons, Heraclonas and Constantine III, should rule jointly upon his death. Heraclius also specified that his wife, Martina, was to be called "Mother and Empress" insofar as she might have influence at court as well. The emperor Heraclius died in February 641 from edema. When Martina made the late Emperor's will public she faced staunch resistance to her playing any active role in government, but both Heraclonas and Constantine were proclaimed joint-emperors in February 641 without incident. After Constantine died of tuberculosis in May 641, Heraclonas became sole emperor, under the regency of his mother due to his young age. He reigned until October or November 641, when he was overthrown by Valentinus, a general and usurper of Armenian extract, who installed Constans II, the son of Constantine III. Valentinus had Heraclonas' nose cut off, then exiled him to Rhodes, where he is believed to have died in the following year.
Constans II, nicknamed "the Bearded", was the Byzantine emperor from 641 to 668. Constans was the last attested emperor to serve as consul, in 642, although the office continued to exist until the reign of Leo VI the Wise. His religious policy saw him steering a middle line in disputes between the Orthodoxy and Monothelitism by refusing to persecute either and prohibited discussion of the natures of Jesus Christ under the Type of Constans in 648. His reign coincided with Muslim invasions under Mu'awiya I in the late 640s to 650s. Constans was the first emperor to visit Rome since the fall of the Western Roman Empire in 476, and the last one to visit Rome while it was still held by the Empire.
Martina was an empress of the Byzantine Empire, the second wife of her uncle the emperor Heraclius, and regent in 641 with her son. She was a daughter of Maria, Heraclius' sister, and a certain Martinus. Maria and Heraclius were children of Heraclius the Elder and his wife Epiphania according to the chronicle of Theophanes the Confessor.
Fausta was the Byzantine empress as the wife of Constans II, when they married in 642.
Gregoria was the Byzantine empress as the wife of Constantine III. She participated in the minority regency government of her son, Constans II, in 641–650.
David was one of three co-emperors of Byzantium for a few months in late 641, and had the regnal name Tiberius. David was the son of Emperor Heraclius and his wife and niece Empress Martina. He was born after the emperor and empress had visited Jerusalem and his given name reflects a deliberate attempt to link the imperial family with the Biblical David. The David Plates, which depict the life of King David, may likewise have been created for the young prince or to commemorate his birth. David was given the senior court title caesar in 638, in a ceremony during which he received the kamelaukion cap previously worn by his older brother Heraclonas.
