Former D.C. Council members Kathy Patterson and William P. Lightfoot announced Thursday that they are backing Independent David Grosso in the Nov. 6 election for an at-large council seat.

Patterson, a Democrat who represented Ward 3 from 1995 to 2007, and Lightfoot, an independent at-large member from 1989 to 1997, praised Grosso for having the character needed to hold one of two seats on the council reserved for a non-Democrat.

“David Grosso brings the integrity we need on the council,” said Patterson, who has been pushing for ethics reforms in the District government.  “And electing David to an at-large seat November 6 is the only hope we have of getting new blood into District government this year.”

Grosso, a lawyer who lives in Brookland, is hoping to unseat council member Michael A. Brown (I-At Large), who has been battered by news reports about his finances and his recent disclosure that $113,950 is missing from his reelection campaign.

Lightfoot, who chaired former mayor Adrian M. Fenty’s 2006 and 2010 campaigns, first mentioned his support for Grosso in a Washington Post article published Sunday that reported that Brown’s license has been suspended five times over the past eight years.

“Grosso is dedicated, hardworking, qualified and honest,” Lightfoot said in a statement released by the Grosso campaign Thursday. “He’s exactly who we need on the D.C. Council at such a critical time.”

Earlier in the week, Brown announced that he’d picked up  support from the Hotel Association of Washington, D.C., the Washington Teachers’ Union, the Nurses Association,  Metropolitan Washington Council AFL-CIO,  the Service Employees International Union  and several other labor groups.