“For the avoidance of doubt I take this opportunity to confirm that it is my wish that neither of my former wife’s sons namely Andrea Sidoli and Antonio Sidoli shall receive any part of my estate as BOTH sons were born to my then wife … during our marriage but I was not their natural father and I consequently take the view that I have no moral obligation to make any financial provision for them from my estate and I FIRMLY TAKE THE VIEW that my said brother and sister-in-law are my closest living relatives.”