Last name Vongsengthong (Vongsengthong 
) , worldwide, is quite a rare family name. The family name Vongsengthong is characteristic of South-eastern Asia, particularly Laos, where it is quite a common surname, and Thailand, where it is an extremely rare surname.
Kat, Sonesavanh, Sonepheth, Souliyakone, Souphanith, and Phonesavanh