I am dealing with an estate where the wife was named as the sole executor (the Will does name substitute Executors). The wife gave authority to her daughter to apply for the Grant as her lawful attorney. The daughter was not named as one of the substitute executors and instead the grandchildren are named.
After the Grant was issued and before the estate could be distributed (the Will set up a life interest trust) the wife died. The authority to the attorney has ended. I believe that the substitute executors now have the authority to apply for a new Grant. However, I am not sure whether this would be a Grant de bonis non, cessate Grant or Double Probate. I have looked on Tristram and Cootes but none of the wording for the PA1A seem to fit this scenario.