Hillsboro Regional Office Staff





Diane Henderson is a paralegal who works on housing issues. She operates the tenant hotline, helping clients learn to help themselves, and identifying housing issues for further legal assistance.  It is not unusual to see her leave the office abruptly to assist a tenant in the middle of an illegal ouster.  HRO office staff frequently make a point to pass her door to listen in on her masterful communication style and to visit with her dog Jax.  Diane enjoys time with her daughter, good friends, good reads, walking Jax and making (never ending) improvements to her old house.



Ellen Johnson joined the Hillsboro Regional Office in 1989 after eight years as a trial attorney in the Metropolitan Public Defender’s office.  Her focus is housing law, particularly the rights of persons with a disability.  Ellen received her law degree from Willamette University College of Law, she also has a master’s degree from University of Montana and an undergraduate degree from Whitman College.  A master gardener, she also enjoys hiking, birding and dancing.


trenaTrena Klohe joined the Hillsboro Regional Office as a staff attorney in May 2002.  Her practice focuses on the civil legal needs of domestic violence, sexual assault and stalking survivors, with a particular emphasis on family law.  Trena has previously worked as an associate in the Washington, DC office of Latham & Watkins, and as a caseworker for Immigration Counseling Service.  As a law student, she also worked closely with Native American clients at the Southwest Indian Law Clinic.  She received her law degree from the University of New Mexico, along with a master’s degree in Latin American Studies.  She is fluent in Spanish, having completed part of her legal studies at the Universidad de Guanajuato in Mexico, and enjoys travel.


hollyHolly Pennock joined Columbia County Legal Aid in 2007 and started working for Hillsboro Regional Office in 2011.  She maintains the OLC Columbia County Satellite Office in St. Helens where she is very involved in community outreach.  She is often called the “face of legal aid” in her area.  Holly is a paralegal working to maintain public benefits for vulnerable populations. She also assists victims of domestic violence.  Holly’s volunteer work in the community includes advocacy for LGBTQ rights and disaster response through her training and experience with the NOVA and CERT programs.  When Holly is not working or volunteering, she can be found square dancing, quilting, making music, or curled up with a good book.  Holly received her undergraduate degree from University of Denver.


MikeMike Pijanowski joined the Hillsboro Regional Office as a staff attorney in 2006.  His practice focuses on housing law including fair housing and foreclosure defense.  Mike moved to Oregon from Arizona in 1997 to attend law school at Lewis and Clark and found himself enamored with Oregon and unable to return to Arizona.  He likes cheesy science fiction movies, video games, growing a garden and an occasional low-stakes poker game.



Maria sias

Maria Sias joined Oregon Legal Services in 1981 as a secretary in the Hillsboro Regional Office.  Still in this same office, she is now the office manager  for OLC Hillsboro Regional Office.  Maria enjoys the challenge of dealing with the variety of issues that she confronts each day.   “It never gets old,” she says.   Maria enjoys entertaining, spending time with her family and traveling with her husband.