Sultan Nizam Shah was the founder of the Nizam Shahi dynasty of Ahmadnagar. His actual name was Malik Ahmad. He was governor of Junar under Bahmani Kingdom. He established his independent rule in 1490 and founded Nizam Shahi dynasty.
Ahmednagar Kingdom was one of the five independent kingdoms which came up after the end of Bahmani Kingdom.
The other four dynasties were Adil Shahi dynasty at Bijapur, Imadshahi dyansty of Berar, Qutubshahi dynasty of Golkonda and Barid Shahi dynasty at Bidar.
Memoirs of Chand Bibi,: The princess of Ahmadnagar (Nawab Lutf un-Dawlah Memorial Series)