The City of Medford invites you to Medford Square for the annual Patriots’ Day celebration. Events begin at 10 a.m. at the Salem Street Burying Ground next to Riverside Plaza as tribute is paid to the soldiers who lost their lives during the Revolutionary War. Festivities for all ages will follow in the Square starting at 10:30 a.m. Around noon, Paul Revere arrives on horseback, re-enacting his famous ride through Medford on the way to Lexington. He'll make a stop…