Cathryn I. Arnø

Cathryn I. Arnø is an associate attorney with Orr McDonnell Law, PLLC in Missoula, Montana, where she focuses on Family Law, Parenting Plans, Divorce, and Civil Litigation. The practice includes domestic-relations disputes and other contested civil matters. Arnø works on matters that require careful review of the facts, governing law, and the client’s practical objectives. The work stays closely connected to the decisions, risks, transactions, or disputes that brought the client to counsel.

Arnø earned a J.D. from the University of Montana, School of Law in 2023. She also earned an M.A., summa cum laude, in English Literature with a Graduate Certificate in Women & Gender Studies and a B.A., cum laude, in English Literature & Creative Writing from the University of Montana. Before pursuing her J.D., she worked as a paralegal for approximately seven years, gaining practical experience in civil litigation and case management.

Arnø has experience with moving from substantial paralegal work into legal practice focused on family-law and civil-litigation matters. That background provided early exposure to case management, client communication, court filings, and the practical demands of litigation before she entered practice as an attorney. This experience supports organized matter development and preparation for negotiation, transactions, administrative proceedings, trial, or appeal when required.

Cathryn I. Arnø is a Montana attorney serving clients in family-law and civil-litigation matters. She brings both prior paralegal experience and recent law-school training to parenting, divorce, and related disputes. The combination of education, prior roles, and current practice supports careful legal judgment and disciplined client service. The practice remains focused on the areas reflected in the lawyer’s current professional profile and clear guidance through the legal process.

Law Office Affiliations

• Attorney, Orr McDonnell Law PLLC
• Member, State Bar of Montana
• Member, Western Montana Bar Association
• Member, American Bar Association

Licensed State

• Montana

Education

• University of Montana, School of Law
  Juris Doctor (JD)
• University of Montana
  Master of Arts (MA) Summa Cum Laude
• University of Montana
  Bachelor of Arts (BA) Cum Laude

Awards & Badges