JL Toole was the son of James Toole and Elizabeth Bertout. Whilst there a lot is written about his public persona, on the other hand not much is written about his private life. Yes, we know that his son, daughter and wife all died and that he was justifiably distraught over the deaths. Interestingly he seems to have expressed more concern over his son Frank's death, perhaps that is because Frank arguably was following in the same theatrical circles. Besides that he was educated at the City of London School between 1841 and 1845.
Interestingly the University of Aberdeen claims to have a photo of John as a boy. With all other pictures beginning in Toole's adulthood there little else to go on and it is not easy for me to be convinced this is the same person.
His last years in Brighton he was nursed by his nephew, Frank Arlton.