About Us

Mariana’s practice has been focused on Matrimonial and Family Law and Residential Real Estate for nearly three decades. She has also represented companies and individuals in Administrative Proceedings.

She is committed to working with parents to collect past-due child support.

After graduating from Fordham Law School in 1995, she practiced at Scoppetta Seiff Kretz & Abercrombie until 2015.

In October 2015, she opened Olenko Law, PLLC, where she continues to provide clients with the same high-quality service and careful attention to detail that has characterized her work throughout her professional career.

Mariana is admitted to practice law in New York State, as well as in the United States District Courts for the Southern and Eastern Districts of New York and the United States Supreme Court.

She speaks English and Russian.

Prior to joining Olenko Law, PLLC in 2019 as Of Counsel, Heather’s Trusts & Estates practice started with the Manhattan law firm of Morrissey & Morrissey, LLP, in 2007, wherein she focused for almost ten years on Trusts & Estates, litigation and administration, estate planning and Guardianship. Heather then joined Lamson & Cutner, PC, focusing on Elder Law issues, advising on Medicaid benefits, estate planning and asset protection trusts, as well as continuing her practice with Trusts & Estates and Guardianship.

Heather has lectured on both estate planning and guardianship proceedings. She was born in Belfast, Northern Ireland and studied law in London at the University of North London and at the Inns of Court School of Law. She was called to the Bar of England and Wales in 1992, completed her pupillage with the Chambers of Rock Tansey, QC, Gray’s Inn Square, London, and continued working there focusing exclusively on criminal defense litigation before moving to New York. She was admitted to the New York Bar in 1997.

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