Leslie ...... There is a possible connection however unfortunately I haven't found the key to Margaret Jane's parent's identity as yet. As you would be aware sometimes this process takes some time with many "brick walls" along the way ..... but the search goes on.
It would be nice to claim a connection with Bram Stoker, but this will need a bit more searching yet. I suppose it depends on how common the name "Stoker" appears in Dublin/Ireland.
Let me know if your research nails down a definite connection. If so you'll hear me cheering all the way from "down under"

Regards Paul