PITTSBURGH — The terminally ill 2-year-old Jeannette boy who Saturday was as his parents' best man has died.

His mother Christine Swidorsky Stevenson says on her Facebook page that little Logan Stevenson died in her arms at 8:18 p.m. Monday at the home she shared with the boy's father and her new husband, Sean Stevenson. The couple were wed at a ceremony at their home.

A family spokeswoman, Sylvia Johnson, confirmed the boy's death this morning.

The boy had leukemia and other complications.

His mother says on Facebook, “He is with angels and he's in no more pain.”

The boy was dressed in a tan pinstripe suit and orange shirt for the 12-minute wedding ceremony.

Logan stood with his grandmother, Debbie Stevenson, during the ceremony uniting his mother and his father.

After a whirlwind week, the Jeannette couple tied the knot in a hastily arranged backyard ceremony that formalized their union and celebrated Logan's life, which doctors say would be cut short by cancer.

The Stevensons abandoned an original wedding date of July 2014 after learning from doctors late last month that their son had two to three weeks to live. The couple wanted Logan to see them marry and to be part of family photos.

Logan, who was born Oct. 22, 2010, was diagnosed shortly after his first birthday with acute myeloid leukemia. He had Fanconi anemia, a rare disease that often leads to cancer.

He endured a stem cell transplant in July 2012. Last March, he underwent surgery to remove a kidney ravaged by a tumor.

During a Make-A-Wish trip to Disney World in June, Logan fell ill. He was hospitalized in Florida before he was flown back to Pittsburgh.

During a trip to the emergency room last month, a test revealed a mass in his remaining kidney, which led to his terminal prognosis. Logan spent his remaining days at home.

Swidorsky's daughter, Isabella Johns, 13, served as bridesmaid and the couple's 1-year-old daughter, Savannah, was her parents' flower girl.