I'll bet I know the ancestor that was involved.
Using a book called Yesterday in Old River - by Paul Dennis Hoffman
It's probably not one of your male ancestors, but a female ancestor.
Hannah Reagan (Howe) 1848-1924
She was one of two female police officers in 1892, a matron at the Fall River city jail. Lizzie stayed with Hannah at the Fall River City jail, rather than in a regular jail cell because there were no jail cells good enough for a lady of her class.
She actually played a role in the case, because she reported to police that she heard the sisters arguing. She also told the newspapers, I think.
There is more info and a pic in Hoffman's book.
Also, the Borden website, www.lizzieandrewborden.com
probably also has info.