Answer : 1. "Alaudddin Khalji – Jalaluddin Khalji"
Explanation :

Key Points Khilji Dynasty (1290-1320) Jalaluddin Khilji (1290-96) He was the founder of the Khilji Dynasty Alauddin Khilji (1296-1316) He was a nephew and son-in-law of Jalaluddin Khilji. Alauddin Khilji killed him and succeeded the throne in 1296. Tughlak Dynasty (1320-1414) Ghiyasuddin Tughlak (1320-25) He was the founder of the Tughlak Dynasty. He was succeeded by Mohammad bin Tughlak. Mohammad bin Tughlak (1325-51) His name was Ulugh Khan and after succeeding Ghiyasuddin Tughlak he was named under the title of Mohammad bin Tughlak. Firoz Shah Tughlak (1351-88) He was the cousin of Mohammad bin Tughlak.