Wikipedia
Tirmizi (surname)
Tirmizi or Tirmidhi or Termezi ( is a surname in Middle East, Central Asia and South Asia. It is used by Syeds who are mostly settled in northern-regions of Pakistan. As their forefathers migrated to Pakistan at that time India from Tremez, a town of modern day Uzbekistan hence they use the surname of Tirmizi.
Tirmizi , Syed families settled in Pakistan, Afghanistan and India claim to be descended from Islamic prophet Muhammad through his grandson Husayn ibn Ali, son of Muhammad's daughter Fatimah and his son-in-law Ali (Ali ibn Abi Talib).