What is "mudumbai"

Mudumba, Mudumbai, Mudumbi, Mudumby, Mudumbye, Mudumbe, Mudumbaiyer, Mudumbaiyar, also called Mudumbai Chakravarthi's or Mudumbaiyers, are, by heritage, a sub-sect of South Indian Brahmins known as Sri Vaishnavas or Iyengars. Their mother tongue is typically Telugu, Tamil or, infrequently, Kannada. There have spread all over South India, mostly in Andhra Pradesh and Tamil Nadu, some even to Karnataka. In the past 100 years, many have migrated abroad from India to United States, Europe, Australia, the Middle East and Africa. There are many well-known persons with the surname Mudumbai/Mudumbi/Mudumby in various fields, mostly in scientific disciplines such as mathematics, medicine and computer science. One such person is an eminent mathematician Mudumbai Seshachalu Narasimhan, widely known as M. S. Narasimhan.