The son Phillip was indeed given a bit of a cruel inheritance, he had to collect it weekly in London but was living in America or Canada at the time, it seems he came back & died in Margate area!
It looks like collecting his inheritance wasn't so onerous for Philip after all.
The Weekly Dispatch (London, England)
Sun., Sept. 27, 1925
“ROVER AND HIS LEGACY.
“NEED NOT CALL FOR HIS MONEY.
“‘It is a practical certainty that the clause will never be enforced. My brother will not have to call for his legacy week by week at the office of our solicitors – that is, unless he chooses to.’
“These were the words of Mr. Stuart Moss Vernon, discussing in a special interview yesterday the strange clause in his father’s will under which his brother, Mr. Philip Zachariah Moss Vernon, was left ₤40 per week, provided that he called for it personally at the office of the family solicitors.
“‘The question was left entirely to the discretion of the trustees, of whom I am one, and we have no intention of asking my brother to call for his money,’ Mr. Moss Vernon went on.
“‘It was in no way a caprice that led my father to make the stipulation in his will [sic] My brother Philip has always been a great roved [sic]; in fact, he has been abroad most of the time since my father died – and the provision that he should call for the money weekly was to guard against its going astray in the event of an accident to him.’
“Mr. Isaac Moss Vernon died in Switzerland ast [sic] January, and left an estate of ₤104,421, with ₤76,999 net personalty.”