Syracuse-founded Hiscock & Barclay has absorbed Elmira-based Davidson & O’Mara, a seven-lawyer litigation firm with expertise in government operations and insurance and in municipal defense.

Hiscock’s seven new attorneys include partners Thomas O’Mara and Bryan Maggs; of counsel John O’Mara and Rance Reynolds Jr.; and three associates. Thomas O’Mara is a Republican state senator, while Maggs is Chemung County Attorney. John O’Mara was special counsel in 1995 to then-Gov. George Pataki and a former member of the Commission on Judicial Nomination.

The combination brings the firm’s head count to 210 attorneys.

Hiscock managing partner John Langan said he was impressed with the Davidson firm’s prowess in government operations and its business relationships and trial experience. He said the combination occurred after talks between Thomas O’Mara and Hiscock partner William Barclay, a Republican in the state Assembly.

Langan also said the Davidson firm’s location in the state’s Southern Tier, near the Pennsylvania border, is valuable due to its business activity and its potential for energy exploration. If and when New York lifts a moratorium on fracking for natural gas, Langan said, the area will be “the centerpiece of New York energy growth” and energy companies are already positioned there. Hiscock has more than 25 energy clients, including drilling, pipeline and oil and gas companies, he said.

Thomas O’Mara said the firms’ combination “opens up a lot of extra opportunities for us,” such as intellectual property and tax practices.