I've recently read the Burton & Swinburne novels by Mark Hodder; there are six of them, effectively set as two trilogies. For fans of alternate history novels with a lot of time travel and science fiction elements they're a great read but they're also a wonderful window into real people of the 19th century. Basic premise is that a distant descendant of Edward Oxford (https://en.wikipedia.org/wiki/Edward_Oxford) develops a means to go back in time to prevent his ancestor from attempting to kill Queen Victoria but in doing so both kills the Queen and his ancestor making him an increasingly insane paradox trying to recreate his family line (and himself) and spawning multiple alternate realities where the future technology and knowledge brought back alters the Victorian-era world. In addition to being a great read with some clever ideas there's a lot of learning to be had too from the appendices which contain actual histories of the fictionalised people throughout (and I'd never heard of Sir Richard Francis Burton before this, but he was a fascinating person). Favourite book of the series would have to be The Return of the Discontinued Man which is very dark and has a very obvious homage to H.G. Wells' "The Time Machine" as it carries our intrepid heroes through leaps forward in time and the massive social changes in British life they witness.