There is a dispute among the historians about naming of the Qutub Minar . Two theories were suggested
1 - first Turkish sultan, Qutb-ud-din Aibak
2 - Khwaja Qutb-ud-din Bakhtiar Kaki of Ush, a saint from Baghdad who came to live in India
Qutub ud din aibak started Qutub Minar but could not complete it. Some historians think that it was named after the saint from Baghdad however some think that it was named after the King who started it.
Indian History is a blunder if u ask me..we have all fakers and yarn spinners who keep writing stories which cannot be proved or stand a chance on test..same like the great Indian rope trick..yet not proved..so whatever we have is Britishers or europeans who have written some of our History with solid proofs that can stand the test of logic reason and science,so best thing is to get some white historians and write and unbiased truth about qutub or whatever in India.