Lancaster lawyer Alston DeVenny on Tuesday announced his candidacy in the special election to fill the late Mayor John Howard’s term. “I’m running to continue John’s good work and keep Lancaster moving forward,” said DeVenny, 56, a former two-term county council member. “I will be a mayor for all people. It’s time we move beyond old grievances and tired thinking…. “I believe we have a great opportunity to grow together and show folks that Lancaster is a wonderful place to live, work and play,” he said.