The Western New York legal community lost two of its own over the weekend.

Former University at Buffalo President and law-school professor William Greiner died Saturday, and Buffalo attorney Peter Gilfillan, a principal in the law firm Gross Shuman Brizdle & Gilfillan PC, died Sunday.

Greiner, 75, was the 13th president in UB's history. His 42-year association with the university began in 1967 when he joined the faculty at the UB Law School.

Greiner was UB president from 1991 to 2004. After he left the UB faculty this fall due to failing health, the university named him president emeritus.

Born in 1945, Gilfillan was a graduate of Franklin & Marshall College and an alumni of the UB Law School.

An attorney for more than 35 years, he was a member of the Erie County, New York State and American bar associations.

Gilfillan, who practiced in the areas of real estate, business and corporate law, was nationally recognized for his work, earning inclusion on the Best Lawyers in America/New York Area's Best Lawyers lists in 2008, 2009 and 2010. He was also cited as a top attorney in the New York Super Lawyers Upstate Edition in 2007, 2008 and 2009.

David Alexander, a colleague from Gross Shuman, called Gilfillan "one of the best lawyers I ever met," describing him as a man with "great knowledge, common sense and a gift for language."

Gilfillan is survived by his wife, Caroline; two children, Jonathan and Sarah; and a grandson, Ethan.

"Peter will be sorely missed by our law firm and the many clients and attorneys he worked with in Western New York," Alexander said.

Funeral arrangements were not known as of press time.