Svyatoslav Ivanovich (c1325-1386), Grand Prince of Smolensk (1359-1386), the son of Ivan Aleksandrovich of Smolensk.
Svyatoslav Ivanovich took the throne of the Grand Principality of Smolensk after his father's death . In 1368 he participated in the first campaign of Algirdas against Moscow , during the so-called "Litovshchina" . When Algirdas was forced to return to the western borders of his principality to repel an attack by the Teutonic Order, the troops which had attacked Moscow retreated to the territory of Smolensk. In 1370 troops of Smolensk took part in the second march of Algirdas against Moscow, after which Svyatoslav received a threatening message from the Patriarch of Constantinople. In 1372, within the framework of the peace treaty between Moscow and Lithuania, the world of Moscow was also signed with Smolensk .
In 1375, troops of Smolensk participated in the campaign of Dmitry Ivanovich Moscow against Tver, while, at the same time, Algirdas raided territory of Smolensk lands), in 1380, led by Svyatoslav's nephew, Ivan Vasilyevich Vyazemsky participated in the Battle of Kulokovo.
In 1386, the troops of Smolensk besieged the Lithuanian-controlled Mstislavl, but soon afterwards, the Polish-Lithuanian troops Jagiello Olgerdovich approached and defeated Smolensk in the Battle of the Vikhra River, where Svyatoslav was killed, his eldest son Gleb was taken prisoner, and his second son, Yuri, ascended to the throne of the Grand Principality of Smolensk and married the daughter of Oleg Ivanovich Ryazan and Evpraksiya Olgerdovna.
- Agrippina of Smolensk (c1355-c1410) is the wife of Ivan Olshansky
- Gleb Svyatoslavovich of Smolensk (c1353-1399) - Prince of Smolensk, was killed in the Battle of the Vorskla River River .
- Yuri Svyatoslavovich of Smolensk (c1355-1407) - Prince of Smolensk.
Alexander Dashek ( 1358 /60 - 1408 ) - the ancestor of the princes Dashkovs . Juliania (Ulyana) - the first wife of the Lithuanian boyar Monivid .
- Anna of Smolensk (c1355-1418) is the wife of the Grand Duke of Lithuania, Vytautas. Perhaps, she was not Svyatoslav's daughter, but a Lithuanian boyar of Sudimont (or his sister).
Ivan (about 1364 - 1403 ) - Prince Vyazemsky , according to another version, Prince Porkhovsky, while Prince Vyazemsky was Ivan - nephew of Svyatoslav Ivanovich. Daughter (?)  - the wife of Boris Mikhailovich (1362-1395), the son of Mikhail of Tver
List of princes of Smolensk
|Offspring of Svyatoslav Ivanovich of Smolensk and unknown parent|
|Gleb Svyatoslavovich of Smolensk (c1353-1399)||1353||12 August 1399|
|Anna of Smolensk (c1355-1418)||1355||31 July 1418 Trakai, Lithuania||Vytautas (c1350-1430)|
|Vasili Svyatoslavovich of Smolensk|
|Agrippina of Smolensk (c1355-c1410)||1355||1410||Ivan Olgimuntovich Olshansky (c1340-1402)|
|Yuri Svyatoslavovich of Smolensk (c1355-1407)||1355||1407|
|Iuliana of Smolensk|
|Aleksandr Svyatoslavovich Dashek (c1358-1408)|
|Ivan Svyatoslavovich of Smolensk (c1364-1403)|
Svyatoslav IvanovichBorn: c1325 Died: 1386
| Prince of Smolensk
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