I haven't yet found an interpretation of Mutansir, but it is obviously a Muslim name, not a Hindu one. Maneka Gandhi & Ozair
Husain's
The Complete Book of Muslim & Parsi Names gives "Mu'tan" as a name meaning "concerned, thoughtful" in Arabic, and also includes the names Mutanabbi, Mutanabbih, Mutana'im, Mutanawwir, and Mutanazzih. Mutansir may be related to those names.