Mehmed I Giray (1465–1523, reigned 1515–1523) was khan of the Crimean Khanate. He was preceded by his father Meñli I Giray (r. 1478–1515) and followed by his son Ğazı I Giray (1523–1524). He gained control of the steppe nomads, put his brother on the throne of Kazan and was killed after taking Astrakhan. As Kalga As his father's Kalga or designated successor and co-ruler, he participated in a number of raids northward. In 1505 he and his father raided what is now Belarus. In 1507 they advanced toward Russia, but turned back on learning of a Nogai raid on Crimea. Mehmed fell from his horse and became ill. The force returned to Crimea. In 1509 the Nogais planned to attack Crimea. Mehmed and a very large army defeated them as they were crossing the Volga. Much booty was taken. In 1510 he was also successful against the Nogais. In 1512 he raided Russia but was driven back by troops from Ryazan. In 1514 he was driven back from the Severia. In 1515, in alliance with the Lithuanians he besieged Novgorod-Seversky. Starodub and Chernogov and took many captives. (A common tactic was to bottle up troops in the towns and loot the surrounding countryside.) For these raids see Crimean-Nogai Raids#List of raids for 1505–1523. As Khan When his father died in April 1515 Mehmed was at Perekop. The old Khan's death was concealed for forty days until Mehmed reached the capital. (the reason for this is not given.) Akhmed's rebellion He appointed as Kalga his younger brother Akhmed the Lame. Akhmed was given Ochakov and raided Lithuania but soon revolted. He intrigued with Moscow and sent his eldest son Gemmet to Istanbul to request military aid against Mehmed. In the spring of 1519 Mehmed sent his sons Alp and Bakhadyr against Akhmed, who was killed in the steppe beyond Perekop. Bakhadyr became Kalga. Alp became Kalga in 1523 when Bakhadyr became khan of Astrakhan. (Howorth (1880), following Nikolay Karamzin (1818) speaks of intrigues and bribes involving Akhmed, Mehmed, Vasili III of Russia and Sigismund the Old of Poland. Nogais A major problem of his reign was gaining control of the Nogai nomads to the north who had become fragmented after the fall of the Golden Horde in 1502. In 1519 a Kazakh invasion drove many Nogais west of the Volga. They asked asylum in the Khan's territory. Two years later the