A group of Nevada County attorneys, certified financial planners and estate strategists convened at a Grass Valley restaurant Wednesday to discuss how the prospect of same-sex marriage affects the finances of their customers. “We may have decisions very soon that could affect estate taxes in this area,” said Jennifer Wilkerson, an attorney, who led the discussion in tandem with Janet Peake, a financial planner. The U.S. Supreme Court is expected to rule this summer on the constitutionality of the Defense of Marriage Act, a 1996 law that defines marriage as between a man and a woman regarding federal benefits with …