A screenshot of the Superman Sam blog.

JNS.org – Sam Sommer, the 8-year-old boy whose battle against leukemia was documented by his parents—both rabbis—in a widely followed blog, died Saturday. More than 1,000 mourners came to pay their respects Monday at the Am Shalom synagogue in Glencoe, Ill., reported theChicago Tribune.

The blog, dubbed “Superman Sam,” was written by his mother, Rabbi Phyllis Sommer. “He died peacefully and calmly and quietly at 12:33 a.m.,” she wrote on her blog. “He was not in fear or in pain. And for that I am eternally grateful.”

“Over his entire brief but meaningful life, Sammy has taught all of us about courage, struggle, strength, and wisdom. But, over the last year and a half, Sam and the entire Sommer family have taught us all about grace, beauty, peace, and acceptance,” read an announcement put out by the Am Shalom synagogue.