Sheffield parents Anya Sousa, 41, and Hugo Sousa, 45, say their 16-month-old son, Leonardo—known as Leo—died suddenly in his sleep. The family reports that he went to bed with what they believed was a mild cold, described as a runny nose. According to accounts from multiple UK tabloids, Leo did not wake up after going to sleep. One report says his older sister found his body. The circumstances are presented as sudden and unexplained in the coverage, with the illness described only in terms of the runny nose observed before bedtime. The reports focus on the parents’ shock and the discovery of his death within the home. None of the provided excerpts include confirmed medical findings, an official cause of death, or details about any investigations beyond the family’s account of what happened before he was found. The story is therefore characterized mainly by the timeline of a presumed minor cold and the unexpected death during the night.