TAMPA — Their names hung in the damp, early evening air, each read aloud as a prayer and a plea. Joe Morgan, 71. Katherine Coleman, 49. William Perez, 62. The names of 110 people — known to have died while homeless in Hillsborough County last year, the most in three years and a grim epilogue to a year and region marked by an unrelenting surge in the cost of living. On Monday, dozens gathered .