Brother Bow was a member of Faction Paradox who grew up in The Loop in the Eleven-Day Empire. His parents and siblings were also part of the Faction. He was named after the Bow Street Runners, because his parents hoped he'd have the same desire for justice.
At the age of eighteen, Brother Bow grew an orb-shaped timeship to use to escape The Loop. The timeship, Lover, took him to the Palace of Placentia in 1509. They had sex, and Lover tried to replace Catherine of Aragon and make their descendants the new English monarchy. This would have preempted the Gregorian Compact and prevented the Eleven-Day Empire and The Loop. Bow didn't want to do that, and made Lover take them back to The Loop and destroy herself. But as she did, she left him with a new timeship — their baby son. (PROSE: Nothing Lasts Forever)