Aidan McHale Sierra, age 12, of Concord, died on Wednesday, August 9, 2017. He was the treasured son of Michael Sierra and Ellen McHale, and cherished brother of Isabel Sierra, all of Concord. Family and friends will gather for visiting hours on Monday, August 14th from 4 to 8 pm in the Dee Funeral Home, 27 Bedford Street, Concord Center. Aidan's funeral Mass will take place on Tuesday, August 15th at 11 am in Holy Family Parish, Monument Square, Concord Center. Arrangements are under the care of the Dee Funeral Home of Concord.