Russian President Vladimir Putin's youngest grandson has been given his mother's surname because his father's surname is Zelensky.

Axar.az reports, citing German newspaper Bild, that according to leaked Moscow civil registry documents cited by Russian investigative outlet Agentstvo, Putin's daughter Katerina Tikhonova gave birth to a boy named Adrian Tikhonov on August 15, 2025.

The child's father is former Bavarian State Ballet director Igor Zelensky. Bild suggests the surname choice may have been intended to prevent confusion with Ukrainian President Volodymyr Zelensky.

The report also says the boy's birth certificate was issued 11 months after his birth, possibly due to security concerns surrounding Putin's family.