Just been having another look but I am struggling. A lot of the things seem to relate to various properties and the rates/rent paid - when it is paid (several March 25th which would be Lady Day - one of the quarter days I think). Also a lot that I cannot read. No mention of Jane or to other relatives - unless I have missed them - apart for the word "grandson" appears.
View attachment 155177 Some money left for some girls (cannot at the moment decipher the surname) and I think it says if they achieve their majority of twenty one without marriage.