The Duffy School of Irish Dance

Our Instructors


Our Instructors



Erin Duffy Martorano, TCRG

Miss Erin began dancing at the age of 8 and went on to place 3rd in the Southern Region Oireachtas (regional championships). She also competed at the National and World Championships. She obtained her TCRG teaching certification from An Coimisiún le Rincí Gaelacha (the Irish Dancing Commission) in 2004, and taught with a local school until founding The Duffy School of Irish Dance in 2007. Miss Erin earned a Bachelor's Degree in English, as well as a Master's Certificate in Graphic Design. She lives in New Market, Md., with her husband and daughter.

Miss Erin is passionate about her students and tailors her teaching style to each individual dancer. She believes that fostering a love of dance in each of her students will, in turn, lead to excellence. Her happiest moments are when dancers or parents tell her how The Duffy School has had a positive impact on their lives.




Casey Duffy, TCRG

Miss Casey began dancing at the age of 4, quickly moved up to the championship level, placing 3rd in the Southern Region Oireachtas. She also has competed at the National level. Miss Casey obtained her TCRG teaching certification from An Coimisiún le Rincí Gaelacha (the Irish Dancing Commission) in 2016. She earned a Bachelor's Degree in Art History, and is now a second grade teacher's aide, as well as an instructor with The Duffy School.




Caitlin Kriner, TCRG

Miss Caitlin began dancing at the age of 7, placing at the Mid-Atlantic Regional Oireachtas and also competing Nationally and Internationally. She assistant taught with The Duffy School of Irish Dance under Erin Duffy Martorano, TCRG and Casey Duffy before she passed her TCRG exam in 2016, becoming certified to teach Irish dance with An Coimisiún le Rincí Gaelacha. Miss Caitlin has a bachelors degree in Civil & Environmental Engineering from Villanova University and works as a Purchasing Agent for ISEC, Inc. She resides in Germantown, MD with her husband, son and daughter. 

Thanks to many moves with her family over the years, Miss Caitlin has taught with and danced for no less than eight different schools and performance teams before joining The Duffy School. She loves using her diverse dance background to aid each dancer in finding what works best for him or her. Miss Caitlin hopes to share a love of Irish dancing, music, and culture as well as a passion for performance, competition, and teamwork that will stay with her dancers their whole lives.



Fitness Coach

Tommy Johnson, MS, PES, CES, CSS, PN-1

Tommy is a local guy whose love of baseball and sports started at a very young age. After an impressive high school baseball career, he attended Marshall University as a scholarship player and captured a starting position as a freshman. Three weeks after graduating with a Bachelor's Degree in Sport Management and Marketing, Tommy was drafted by the Seattle Mariners Organization.  After several years playing minor league baseball, Tommy felt it was time to give something back to the game by teaching young athletes. Over the last several years Tommy has continued his education, completing a Master in Science: Exercise Science with a concentration in Human Performance and Injury Prevention.  He is also an NASM Performance Enhancement Specialist, NASM Corrective Exercise Specialist, Functional Movement Specialist, and NASE Certified Speed Specialist Level 2. Tommy is the Strength Training and Conditioning Coach for The Duffy School, and has spent the last few years learning about the athleticism of Irish dance in order to best serve our dancers.