LONDON — It was harrowing for those who listened, but infinitely worse for those whose narrative of loss had been woven into their days and nights since the Grenfell Tower fire took dozens of lives and built voids in the hearts of the survivors.

And perhaps most wrenching of all, as a long-awaited public inquiry into the inferno began hearing evidence in London on Monday, was the story of Logan Gomes, delivered stillborn hours after his family escaped the blaze on June 14, 2017.

On that night, to the horror and shock of the apartment tower’s residents, a fire believed to have started with a faulty electrical appliance leapt up the building unchecked, turning the 24-story tower into a huge torch in West London. With 72 dead, including Logan, it was among the worst peacetime disasters in the British capital.

“Our sleeping angel, he was,” said Logan’s father, Marcio Gomes, choking back sobs as he presented photographs and tributes to the baby who was delivered, lifeless, in a hospital after Mr. Gomes, his wife and two daughters escaped their apartment on the 21st floor.