Mason James Evansco, age 19 months, beloved son of Lydia Breanna O'Leary and Eric Michael Evansco, was born October 8, 2012 at Children's Hospital, in St. Louis, Mo. He passed away Thursday morning, May 15, 2014, at Children's Hospital, St. Louis, Mo., with his loving family surrounding him.

Mason was full of life and although born with heart ailments, he played hard and loved much. His infectious smile brought much joy to his family. He loved his dogs and the Mickey Mouse Hot Dog song.

Mason is survived by his mother, Lydia O'Leary of O'Fallon; father Eric Evansco of Belleville; his big brother Brandon; and grandparents Paul and Michele O'Leary of O'Fallon, and Janet Evansco of Belleville.

In lieu of flowers and other gifts, memorials are suggested to CICU at Children's Hospital, St. Louis.

Visitation: Friends may call from 4:00 – 7:00 p.m., Tuesday, May 20, 2014, at Wolfersberger Funeral Home, O'Fallon.

Funeral: 7:00 p.m., Tuesday, May 20, 2014 at the funeral home, with Elder Bonnie Wagner officiating.