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Jidokwan Family Tree

Here’s a “family tree” style chart that shows all known black belts in our branch of Jidokwan and locates River Valley Taekwondo within that history. If you studied under Master Choi Bong Young and/or Sean Owen, or if you have trained with any of these individuals, we’d love to hear from you and hope you’ll get in touch: [email protected].

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Jidokwan family tree
River Valley Taekwondo Instructors

William Tuman

Head Instructor
William Tuman has been practicing and teaching the Jidokwan style of Taekwondo since 1989 and holds the rank of 오단 (O Dan, fifth degree black belt). He founded River Valley Taekwondo in Northampton in 1997.
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Matt Roncone

Matt Roncone began practicing the Jidokwan style of Taekwondo at River Valley Taekwondo in 2001 and currently holds the rank of삼단 (Sam Dan, third degree black belt). Matt has been teaching since 2008.
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Luke Ryan

Luke Ryan started practicing the Jidokwan style of Taekwondo at River Valley Taekwondo in 1998 and holds the rank of 이단 (Ee Dan, second degree black belt). He began teaching in 2004 when he was promoted to the rank of 일단 (Il Dan, first degree black belt).
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