Help required to locate 2 ggg aunts

[Lynn the Forest Fan]

I have been inspired by the recent reduction in the cost of wills, to do a bit more of my tree. This led to me ordering the death cert for my ggg uncle Charles Clarke, which sadly didn't prove as interesting as I had thought, but did encourage me to find out what happened to 2 of his sisters Elizabeth c1846 and Caroline c1856 Great Ellingham Norfolk. I have traced his siblings, including my gg grandfather William, to their deaths but lost these 2 after 1871. I am making use of the free Ancestry weekend to look for them, but have had no luck. I did think I had found a marriage for Elizabeth to a Thomas Drake Chillystone, but that turns out to be an Elizabeth Carter. Thomas does appear to be their illegitimate cousin by their grandfather Thomas Drake and his housekeeper/partner Charlotte Chillystone.

Any help would be appreciated, as i would like to find them while I still have Ancestry access.
Thanks