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Our Attorneys

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Meet Our People

Holsinger, Clark & Armstrong, P.C. is a law office located in Indiana, Indiana County, Pennsylvania. The firm was established in the 1930’s by Edwin M. Clark, Sr. who went on to serve twelve years as the District Attorney for Indiana County, and twenty years as the President Judge of Indiana County.


Alan Holsinger, one of the original partners, practiced law in Indiana County for over forty years before his retirement in 2001. In 1981, John H. Armstrong, a former Pennsylvania State Trooper and counsel to the Pennsylvania State Police joined Mr. Holsinger and Mr. Clark resulting in the formation of the now recognized law firm of Holsinger, Clark & Armstrong P.C.

Samuel H. Clark



Mr. Samuel Clark graduated from Widener School of Law – Harrisburg in 1998. At Widener he was a member of the Trial Advocacy Honor Society and participated in the Harrisburg Civil Law Clinic as a certified legal intern.

Mr. Clark’s practice focuses on real estate, oil, gas, and mineral law, estates and environmental law. He is the former Southwest Regional Counsel for the Pennsylvania Department of Environmental Protection. He has represented clients throughout Pennsylvania.

He is a member of the Pennsylvania Bar Association, Indiana County Bar Association and Pennsylvania Trial Lawyers Association. Sam has been recognized in Philadelphia Magazine’s “Pennsylvania Super Lawyer Rising Stars Edition” as being among the top 2.5% of young lawyers in Pennsylvania.

Jennifer L. Westrick



Jennifer L. Westrick, a former officer in the Pennsylvania Army National Guard, joined the law firm of Holsinger, Clark & Armstrong, P.C., in August 2005. Jennifer focuses the majority of her practice on Estate Planning, Family law matters, Adoptions, and Guardianships for incapacitated persons.  She also helps clients set up new Limited Liability Companies and Corporations with the Department of State, Corporations Bureau.

Jennifer concentrates on providing legal representation for clients involved in divorce, child custody, and support actions, as well as adoptions and guardianship proceedings filed in Indiana County. Jennifer believes it is important to have a lawyer who understands your specific needs, as each client and case is unique to that individual.

Jennifer believes Estate Planning is important for every person, no matter your relationship status.  Everyone should at least have a Last Will and Testament and Power of Attorney.

If you are looking to start a new LLC or Corporation, she can assist you with all of the legal matters including setting up or even converting your company, preparing leases and contracts, and reviewing any business legal matters.

Jennifer is a member of the Pennsylvania Bar Association and the Indiana County Bar Association. She served as the solicitor for Indiana County Children & Youth Services for over four years and currently serves as the solicitor for the Indiana County Tourist Bureau.  Jennifer is also an Assistant District Attorney for the Indiana County District Attorney’s Office and one of the team members of the Veteran’s Treatment Court of Indiana County.

S. Ryan Wingrove



Ryan Wingrove is an associate attorney at Holsinger, Clark & Armstrong, P.C. Ms. Wingrove, an Indiana, Pennsylvania, native, is a graduate of Indiana Senior High School’s Class of 2008. In 2012, she obtained her Bachelors of Art degree from the University of Miami with a double major in political science and history accompanied by a dual minor in Sociology and English. After obtaining her undergraduate degree, she relocated back to Western Pennsylvania and began her post-graduate studies at the University of Pittsburgh’s School of Law.

While attending law school, Ms. Wingrove was actively involved with the Elder Law Clinic, where she advised clients and assisted them with their estate planning needs. She also worked as an intern at Holsinger, Clark & Armstrong prior to earning her degree and becoming licensed. Ms. Wingrove obtained her law degree from the University of Pittsburgh School of Law in 2015 and became licensed to practice law in the Commonwealth of Pennsylvania that same year.

Prior to joining Holsinger, Clark & Armstrong, Ms. Wingrove served as a judicial law clerk to the Honorable Valarie Costanzo of the Washington County Court of Common Pleas.

Ms. Wingrove currently serves on the Alice Paul House Board of Directors in Indiana, PA as Chair of the Governance Committee, on the Evergreen After School Club Board of Directors in Indiana, PA as Vice President and Chair of the Governance, Policies and Bylaws Committee, and on the Community Guidance Center Board of Directors as a member.

Ms. Wingrove’s principal areas of practice include real estate law, estate planning and administration.