Aayush Sharma - UGLY. Son of corrupted politican

Politcian Sukh Ram is the grand father of Aayush Sharma who was caught by CBI for first ever biggest telecom corruption in India. CBI chief Joginder Sharma wrote in his book that crores of rupees cash in bags were found at the residence of telecom minister Sukh Ram.

Why is his surname different from his grandfather and paternal uncle?

Also crores were thrown into the river.