DAVID DE YOUNG (standing next to his mother Ayya Santussika) was raised in the San Francisco Bay Area of California, USA. He finished his BA degree in Jazz Piano Performance at the Berklee School of Music in Boston in 1996. He arrived in Thailand late in 1998 and received monk ordination and name Gunavuddho (One Who Cultivates Goodness) in 2000 at Wat Nong Pah Pong, Ajahn Chah's main monastery. Since then he has lived with many of the senior disciples of Ajahn Chah such as Ajahn Jayasaro, Ajahn Pasanno, Ajahn Jundee, Ajahn Dtun, and Ajahn Anan at Wat Marp Jan. After 10 years of living in Thailand, he returned to California and lived at Abhayagiri Monastery.

David is a student of Ajahn Jayasaro, Ajahn Pasanno, and Ven. Bhikkhu Bodhi, and has helped Ven. Bhikkhu Bodhi's charity Buddhist Global Relief, as the BGR representative for Northern California, organizing BGR events such as Walk to Feed the Hungry.

He left the monkhood in March 2013, became the International Program Manager at Suan Mokkh Bangkok for one year, and teaches English, Meditation and Music in the Bangkok area.