Who was Taylor swifts song in stand up to cancer about?

" Ronan" is a song recorded by American singer-songwriter Taylor Swift for the Stand Up to Cancer fundraising telethon, which aired on September 5, 2012 on several major American broadcast networks. Swift wrote the song after meeting Maya Thompson, whose four-year-old son Ronan had died of neuroblastoma, and it tells the story of Ronan's life and death from his mother's perspective