DeSISTO, Michael A. of Dorchester July 9, 2010. Beloved son of Anna T. "Nancy" (Sheehan) DeSisto of Dorchester and the late Frank A. DeSisto Lt. B.F.D. Loving brother of Nancy DeSisto of CT, Frank DeSisto, Linda Scarlata, David DeSisto and Diane Ellis all of Dorchester. Also survived by many nieces, nephews, grandnieces and grandnephews. Visiting hours in the John J. O'Connor & Son Funeral Home 740 Adams St. (near Gallivan Blvd.) DORCHESTER Wednesday 4 to 8 pm. Funeral Mass in St. Ann's Church NEPONSET Thursday morning at 10 o'clock. Relatives and friends are respectfully invited. Interment Gethsemane Cemetery, West Roxbury.