Our People

Mary Nyhan


Mary is a practical project leader and coordinator who enjoys working beside companies and individuals in achieving their business strategies. Mary combines both knowledge and problem-solving skills in tackling complex tax issues for her clients. Mary is expert in providing timely, concise and clear advice on complex matters.

Mary has over 24 years of experience including previous roles in Arthur Andersen, tax director in KPMG and Partner in RSM Farrell Grant Sparks. In terms of non-practice roles, Mary was also a tax manager for 18 months advising on tax-based property lending on the formation of Bank of Ireland Business Banking in 1998/1999.   She was also Head of Tax in Mercury Engineering Group where she oversaw the taxation issues linked to the establishment of the group’s operations abroad along with provision of strategic tax advice to  the group’s shareholders.   These non-practice roles gave Mary the opportunity to see the importance of tax advice which combines technical knowledge and commercial relevance.

Mary is a regular contributor to various publications and frequently presents on topical tax matters.

Mary is a member of the Irish Tax Institute and a fellow of Chartered Accountants Ireland. She is also a committee member for the Chartered Tax Consultants programme with Chartered Accountants Ireland.

lisa materson

Lisa Masterson


Lisa joined the firm in 2017 having previously worked in Ireland and the UK with Arthur Andersen, Matheson and Hogan Lovells.

Lisa’s tax and legal experience leaves her excellently placed to advise on complex tax and legal transactions.

Lisa focuses on the project management of complex reorganisations, business sales, and acquisitions. She is also involved in ensuring that tax strategies are compliant with the Companies Acts and in particular the 2014 legislation.

Lisa’s extensive UK expertise makes her well placed to advise on the interaction of Irish and UK taxation for executives and companies based in both jurisdictions.

Lisa is a fellow of Chartered Accountants Ireland.