A Mass of Christian Burial will be celebrated on Saturday, May 22 at St. Matthew Catholic Church in Dorchester for victims of the Jan. 12 earthquake in Haiti. The Mass, which will be celebrated by Fr. William Joy of St. Angela’s parish in Mattapan, will be followed by a symbolic burial at New Cavalry Cemetery in Mattapan. “We have a small coffin that we will ask people to fill with the names of those whom they lost in the earthquake,” said memorial organizer Collette Ostine. The Mass will begin at 10 a.m. St. Matthew Church is located at 33 Stanton Street in Dorchester.