Andrei Glebovich of Ryazan (c1150-c1185)

Biography
During the conflict of 1180, on the orders of their elder brother Roman, who had fled to the Polovtsians, Igor and Svyatoslav led the defense of Principality of Ryazan as the troops of the Grand Principality of Vladimir-Suzdal led by Vsevolod Yuryevich approached. Ryazan was not taken, but the dispute was settled by Roman and [Igor]] complying with Vsevolod's desires, according to which the Princes of Ryazan were seated according to their seniority. After the settlement, (in 1186) Svyatoslav was mentioned as co-ruler with Vsevolod Glebovich in the Principality of Pronsk.

In 1186, Roman invited Vsevolod and Svyatoslav to a council, but after their refusal, he began military actions and besieged Pronsk. When news of the arrival of troops from the Grand Principality of Vladimir-Suzdal and the principality of Murom reached Kolomna, the troops of Ryazan lifted the siege of Pronsk, and Vsevolod went to the opponents with this news. However, after the opponents returned home, the troops of Ryazan marched again against Pronsk and cut the city's water supply. Svyatoslav opened the gates for them and received the rule of the Principality of Pronsk from Roman. Vsevolod's troops, as well as the garrison of the Grand Principality of Vladimir-Suzdal were taken prisoners by the troops of the Principality of Ryazan. Vsevolod Glebovich was entrenched in Kolomna and participated in the new campaign of Vsevolod the Big Nest and the Princes of Murom against Ryazan in the same year. Vsevolod Glebovich returned to Principality of Pronsk, where he died in1207.

In 1207, Svyatoslav together with Roman and nephews Ingvar and Yuri Igorevichi were accused before Vsevolod the Big Nest by nephews Gleb and Oleg Vladimirovich in secret union with Olgovichi and ended up in Vladimir captivity, during which he died.

Father
Gleb Rostislavich - Prince of Ryazan (1145-1177 with interruptions).

Mother
Yevfrosiniya Rostislavovna (died 1179), daughter of Rostislav Yuryevich.

Brothers and sisters

 * 1) Andrei Glebovich of Ryazan (c1150-c1185)  - Prince of Ryazan.
 * 2) Igor Glebovich of Ryazan (c1154-1194)  - the appanage prince of Ryazan.
 * 3) Feodosya Glebovna of Ryazan (c1156-c1200)  - married Mstislav Rostislavich the Brave
 * 4) Vladimir Glebovich of Pronsk (c1158-c1186) - Prince of Pronsk (1180-1186).
 * 5) Vsevolod Glebovich of Pronsk (c1160-1207)  - the Prince of Pronsk (up to 1186, 1188-1207) and Kolomna (1186-1,188).
 * 6) Svyatoslav Glebovich of Pronsk (c1162-1207)  appanage Prince of Pronsk.
 * 7) Yaroslav Glebovich of Ryazan (c1164-c1199)  - the prince of Ryazan.

Wife
Information about the wife of Svyatoslav missing.

Children

According to the late chronicles, Svyatoslav had two sons, whose names are indicated differently in the sources :
 * 1) Rostislav (Yaroslav) Svyatoslavich
 * 2) Mstislav Svyatoslavich