About Us

WILLIAM J COSTELLO II has been a resident of the Town of Grand Island for most of his life, having attended Huth Road Elementary School on the Island for fifth grade, and continuing in Grand Island Schools.  He is a graduate of Grand Island High School, the University of Rochester and Albany Law School. He has conducted his law practice on Grand Island for over 35 years as a sole practitioner and in a partnership for nearly twenty years.

Throughout his long-standing residence on Grand Island, he has served the community faithfully, with his reputation bringing him new clients from across the Erie and Niagara counties.  He is admitted to practice in all Courts throughout New York State, including Federal Courts.  

JONATHANE RICCI has an undergraduate degree in history and political science.  He attended the University of Windsor where he spent 5 years in total, 1 year as Student Administrative Counsel President.  

He went on to obtain a three-year law degree at Michigan State University Detroit College of Law where he was Student Bar Association President for two years.

He was called to the Michigan State bar in 1998.  He attended Georgetown University Law Centre for one year where he obtained a Masters in Law, specializing in International Tax.


Jonathane began his professional career in 1999 at KPMG in Toronto working in the U.S. Corporate Tax Group.  Three years later, he started a cross-border law practice in Toronto with another colleague where he headed the U.S. side of the practice.  He held the position of Partner until 2008 when he started a class action services company and ran that company until 2012.  In 2012, he went out on his own and began to build a personal and corporate client base in Michigan, New York and across other U.S. states.

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William J. Costello II, P.C.

1980 Whitehaven Road

Second Floor

Grand Island, NY 14072