Timothy A. Perry, last year's top-earning Annapolis lobbyist and a former top aide to Senate President Thomas V. Mike Miller, has left the Baltimore law firm of Gordon Feinblatt to launch his own firm with three partners.

Perry announced Monday that he is joining forces with lobbyist Josh White, former Del. Justin Ross and former state Deputy Secretary of the Environment Jonas Jacobson to launch a new Annapolis-based government affairs firm.

Perry reported the highest compensation among Annapolis lobbyists for the year ended Oct. 31 with $1.3 million. White, who is leaving the top-earning firm of Rifkin, Livingston, Levitan & Silver, ranked 31st with earnings of just under $400,000.

The new firm -- Perry, White, Ross & Jacobson -- will start business with strong ties to the General Assembly leadership and the O'Malley administration.

Perry served as chief of to Miller, whose former employees are well represented among the lobbying corps' top earners, from 2002 to 2006. White was campaign manager for O'Malley in his 2006 gubernatorial campaign and served as his director of intergovernmental affairs.

Ross, first elected to the House of Delegates from Prince George's County at age 26 in 2002, was an up-and-coming member of House Speaker Michael E. Busch's Democratic leadership team before he resigned midway through his third term in November 2012. At the time, he said he wanted to spend more time with his wife and four children.

Ross served on the tax-writing Ways & Means Committee and was named deputy majority whip in 2007. Having sat out the 2013 session, he is now eligible to lobby his former colleagues.

Jacobson, who is also leaving Gordon Feinblatt, served as deputy environment secretary in the first O'Malley administration and later went to work for Baltimore County Executive Jim Smith, now Maryland's transportation secretary. He joined Gordon Feinblatt in 2011.

Perry's departure leaves veteran lobbyist D. Robert Enten as the firm's top earner with $930,169 last year, ranking 10th on the state list.

The new firm has a decidedly youthful tilt, with all of the principals under 50. Perry is 42, while White is 45 and Jacobson 46. Ross is 37.