The book I seek is British, probably published in the 1970s. The story is about an abused boy who somehow travels back in time to the Industrial Revolution; his name is “Creep” (given by his abusive mother). In the present day, Creep’s brother searches for him and finds a historical record about him
Is your book “A Chance Child” by Jill Paton Walsh? First published in 1978.
Jill Paton Walsh: A Chance Child
“A Chance Child” by Jill Paton Walsh. “Creep accidentally travels back in time to the British Industrial Revolution, while in the present his half-brother is anxiously searching for him.”
A Chance Child by Jill Paton Walsh (1978)
That’s it! Thanks so much, everyone.