I think it is Mary - look at the little leg in 'y'
So Mary, Catholine & Hester
It would have to be the 'H' in Hester with the loop joining the two vertical strokes shifted to the right then.
Looking again at the last two letters I don't see them as 'er' - so not Hester or Sister.
The last three words are in different hand and ink but all the entries in the register in that column for 'Relatives and Apprenticeships and Where last Residing' have no initials or signature of the person making the entry.