Chief Instructor: Sensei Bill Williams
Bill is the Owner and Chief Instructor at the Seibukan Dojo, where he continues to train, teach, and manage the daily operations of the dojo.
Bill began his training in 1981 in Isshin-ryu Karate, and Sosuishi-ryu Jujutsu. He currently holds the grades of 7th Degree Black Belt (Nanadan), and the title of Kyoshi in Isshin-ryu Karate-do, and also holds the grade of 6th Degree Black Belt (Rokumokuroku), and the title of Shihan in Sosuishi-ryu Jujutsu, and NiDan in Judo, certified by the USJA, and certified Yudansha by the Kodokan Committee, Tokyo Japan.
Shitama, Manzo Sensei, 16th Headmaster of Sosuishi-ryu Jujutsu designated Bill Williams Sensei as the Co-Director of the Sosuishi-ryu Jujutsu Kai-USA, (SJJK-USA).\
In April of 2018, Bill was appointed to the Tokubetsu Kaiin, (Special Members) of the Sekiryukan Dojo, in Fukuoka City, Japan by Shitama, Manzo Sensei, 16th Headmaster of Sosuishi-ryu Jujutsu, and Kancho of the Sekiryukan. The Sekiryukan is the oldest dojo in Japan and the Headquarters of Sosuishi-ryu Jujutsu.
In May of 2005, Bill successfully completed the *Senbondori, (test or challenge of 1000 points) that was overseen by the 16th Headmaster of Sosuishi-ryu Jujutsu, Shitama Manzo Sensei, the 16th Dai Menkyo of Sosuishi-ryu Jujutsu who traveled to New York to conduct the senbondori at the Seibukan Dojo.
In 2007, Bill retired as a Highly Decorated Detective Sergeant with the New York Police Department. During his career, he was awarded over 300 medals and awards, making him half of one of the most decorated teams in the history of the NYPD. Bill has been awarded the prestigious NYPD Medal for Valor, for a shooting incident in which he was struck in the head with bullet fragments during an exchange of gunfire with four armed adversaries. Bill was a First Responder at the World Trade Center, and was assigned to supervise a joint NYPD/FBI Task Force investigating the September 11, 2001 terrorist attack.
Bill graduated Cum Laude from Mercy College with a Masters Degree in Organizational Leadership
Dojo Instructor: Sensei William Kinkel
Bill is one of the Senior Instructors at the Seibukan Dojo, and Co- Director of the Sosuishi-Ryu Jujutsu Kai-USA.
In 1981, he began his training in the martial arts and initially trained in Isshin-Ryu Karate-do, and later began his training in Sosuishi-Ryu Jujutsu. Bill currently holds the grades of 7th Degree black belt (Nanadan) and the title of Kyoshi in Isshin-Ryu Karate-do, and 6th Degree Black Belt (Rokumokuroku), and the title of Shihan in Sosuishi-Ryu Jujutsu.
In April of 2018, Bill was appointed to the Tokubetsu Kaiin, (Special Members) of the Sekiryukan Dojo, in Fukuoka City, Japan by Shitama, Manzo sensei, 16th Headmaster of Sosuishi-ryu Jujutsu, and Kancho of the Sekiryukan. The Sekiryukan is the oldest dojo in Japan and the Headquarters of Sosuishi-ryu Jujutsu.
In March 2004, Bill completed the *Senbondori (test or challenge of 1,000 points). Shitama Manzo Sensei, the 16th Dai Menkyo of Sosuishi-ryu Jujutsu traveled to New York to conduct the senbondori at the Seibukan Dojo. This was the first time the Senbondori was held outside Japan since its inception in 1868.
Bill is a retired New York City Police Officer, and a certified USA swimming level 2 Swim Coach. With over thirty years of experience, Bill is an expert at teaching children.
Dojo Instructor, Sensei Rondy Angoy
Rondy is one of the Senior Instructors at the Seibukan Dojo, and holds the grades of 5th degree black belt (GoDan), and the title of Renshi in Isshin-ryu Karate-do and also holds the grade of 5th degree belt (Gomokuroku), and the title of Shihan-Dai in Sosuishi-ryu Jujutsu. He began his training in 1996 in Isshin-ryu Karate, and Sosuishi-ryu Jujutsu.
In March 2004, and May of 2005, Rondy successfully completed the *Senbondori, (test or challenge of 1000 points) that was overseen by the 16th Headmaster of Sosuishi-ryu Jujutsu, Shitama Manzo Sensei. Rondy is one of the very few students that has ever completed this grueling test of stamina, will power, and spirit. TWICE!
Rondy served in the U.S. Army Reserve from 1994 to 2002, and was deployed to Bosnia and Herzegovina as part of the NATO peacekeeping force for Operation Determined Effort. He studied the Japanese Language at Montclair University, and the Japan Society in New York, and spent a year in Japan studying at Kansai Gaikokugo Daigaku.
Dojo Instructor, Sensei Roberto Cambeiro
Roberto is one of the Senior Instructors at the Seibukan Dojo, and holds the grade of 5th degree black belt (GoDan), and the title of Renshi in Isshin-ryu Karate-do, and also holds the grade of 3rd degree black belt (Sanmokuroku) in Sosuishi-ryu jujutsu.
Roberto started his Isshinryu Karate-do training in Bayonne, New Jersey in 1987, and has been training and teaching at the Seibukan Dojo since 2013.
Roberto is a freelance Theatre Director, and the Director of Facilities for ART/New York.
The Seibukan Dojo Teaching Team is on the mat for every children’s class. We are experts at teaching your children, and we provide a safe, and supervised environment where our students can realize their potential.
Seibukan Dojo Teaching Team:
L-R Sensei Mario, Sensei Rondy, Sensei Bill, Sensei Roberto, Sensei David.
*Senbondori:
Sosuishi-ryu’s 12th headmaster, Shingo-Munetsuga Shitama, first established this “thousand-point challenge” in 1868. A challenger must face a group of opponents called “yoseko” throwing down one another 1,000 times, a very strenuous task. Only black belts are permitted to attempt this test of sheer endurance. There is no concept of winning or losing in senbondori, the only thing that is important is to complete it. 354 people in Japan completed this grueling test of stamina, will power and spirit since it’s beginning; two were women. To this day only three percent of the students at the Sekiryukan have successfully completed senbondori. The Seibukan Dojo has conducted senbondori under the auspices of the Sekiryukan since 2004.
Seibukan Dojo 