I have just received a marriage certificate which shows that Eliza Milward married Leonard Draper 1861. Her father is stated as Richard Barker, I believe Eliza was born around 1823. When Leonard dies she married John Bevan and they brought up my grandfather Frank Adams Draper. We knew her as Granny Bevan. (I think this may be your Eliza Barker and if it is she is my gt gt grandmother too.