https://www.warhammer-community.com/2024/07/22/codex-imperial-agents-unleash-the-might-of-the-emperors-inquisition/
"When Guilliman was five years old, he smashed the door to his study( which was crafted from bronze and weighing at least three tons) in a fit of rage. It was the only time Tarasha Euten pulled his ear and made him stand facing the wall."