According to The Associated Press, Sean and Christine, a couple from Pennsylvania, have moved the date of their wedding ceremony so that their son can serve as their best man.
Logan suffers from Fanconi anemia, a rare disease that often causes cancer. He was diagnosed with Leukemia when he was 14 months old.
Last March, Logan lost one kidney to a tumor and now a mass has been discovered on his other kidney.
Last week, doctors told Sean and Christine that Logan only has two or three weeks to live.
Friends and family have pitched in to help Sean and Christine with the wedding, with Logan resting and spending his final days at home with his family.
Ryan Broderick is a reporter for BuzzFeed News and is based in London.
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