An unusual and amusing Will was contested in an Australian Court a few years ago.
The deceased man separated from his wife in 1959 and shortly after the wife was baptized as a JW. In the following years their four children also got baptized. Apparently this enraged the deceased for the remainder of his life, who was himself a Catholic.
His Will included two conditions that his four children were required to fulfill before they would qualify to receive their share of the inheritance. They were required to attend his funeral and be baptised in the Catholic Church within three months of his death. His four JW adult children did attend his funeral but didn't become Catholics.
The adult children sought to have the condition of becoming a Catholic as being void or of no effect. The Court, after several hearings, made the decision that they could not inherit their share as they did not fulfill the condition. The money was then divided amongst 13 other relatives (including grandchildren)