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Our Staff

Parish Staff


Clarence Mamaril

Clarence Mamaril, Office Manager

Clarence joined St. Isabella's Parish in 2001 as a cantor and guitarist, and has served in several different ministries over the years, primarily music and youth ministry. His present ministerial responsibilities include preparing our Parish Bulletin, church and parish center scheduling, and assisting our high school & adult youth ministry volunteers. Clarence has been happily married to his wife for over 23 years, and they have 3 daughters and 1 grandson. A graduate of Santa Clara University and Santa Clara University School of Law, he is also an attorney, primarily in Immigration law, and a Parks & Community Services Commissioner for the City of American Canyon.


Lynn Pieri Youbg

Lynn Pier Young, Director of Music

A native of Marin County, Lynn attended St. Patrick’s Grammar School in Larkspur, Marin Catholic High School and received her Music Degree from Dominican University. Lynn has been actively involved as a Catholic Church accompanist (organ and piano) since the age of 15!    She has played at most every parish in Marin, as well as many others throughout Sonoma and San Francisco. Lynn joined the Music Team at St. Isabella’s in 1991 and was named Director of Music in 2019. Lynn remarks, “We as Catholics are fortunate indeed to have such a rich variety of music available to share with our church community.   From sacred chant to traditional hymns, Gospel selections to the many wonderful contemporary pieces ~ music gives people a chance to pray in another way!” “I also firmly believe we must recognize, encourage and train young people in our congregations to become accompanists and cantors for our future.” Lynn can be reached at 1-707-763-3965.



 Lyn Gatti

Lyn Gatti, Parish School of Religion (PSR)

Lyn is our Director of Religious Education, overseeing our Parish School of Religion, RCIA program, and volunteer teachers.  She graduated from St Isabella's school, Marin Catholic High School, and the University of Notre Dame.  She later pursued a degree in fashion design at FIDM and ESMOD.  After working for many years outside California, Lyn returned to Marin and happily landed back in St Isabella's parish. She volunteered for 5 years with PYC as an adult faculty, 3 years as a PSR teacher and director of the annual Christmas Pageant.  In 2013, she was asked to be director the Parish School or Religion. Lyn can be reached at or 479-1560 x 13.



 Shane Graham

Shane Graham, Parish Youth Council (PYC)

Shane is our Co-Director for PYC high school ministry.  His entire life's religious experience has centered around St. Isabellas.  He attended mass here as a child and was a graduate of St. Isabella's school.  While in high school at Terra Linda, he discovered his love for PYC as a participant for 4 years and an officer for 2 years.  After graduating from College of Marin and Dominican College, Shane was sure about only one thing for his future.....He wanted to be part of PYC. He wanted to give back to the program that helped him get through the difficult & awkward years of high school.  In 2008, Shane volunteered as adult faculty and was asked by then director, Clarence Mamaril, to become head of PYC liturgies. Shane's creativity and love for this program is evident in all aspects of his ministry. He was asked to become Director of PYC in 2014. 



Mike Mangini, Pastoral Minister

Mike handles most of the day-to-day needs in the rectory.  He answers the telephone calls, coordinates the ministry schedules, handles mass requests. Mike has been a parishioner of St Isabella's for over 40 years.




Steven Pilc

Steven Pilc, Staff Accountant (Retired)

Steven, a life long resident of Marin, had been a parishoner at St. Isabella's for over 20 years. He graduated from San Francisco State university with a degree in finance, and joined the rectory team in 2013 until June 2020. Steven is currently living in Idaho. We thanks Steven for his works on the parish accounting all these years.

Please forward any finance/account matters to




Nahed Naser, Staff Accountant

Welcome Nahed to the parish finance team. Nahed also works as the school accountant with two boys attending St. Isabella's school.