Is Aberline supposed to be Frank Aberline, who investigated the Jack the Ripper case?

Also, why is this film set in the 1880's? The original film was set in the then contemporary 1940's. This is sort of an Elseworlds (Elseworlds were specials where we saw alternate Earths where the Batman was active in the 1880's, for example.). This reminds of the film the Outfit, which was at one point slated to take place in the late 1940's (the novel by Richard Stark took place in the then contemporary 1960's).