I came across this article from the book, Sun of All Seasons Vol II, about a WD went to lots of activities and had the good fortune to brought up 4 capable persons for kosen-rufu.
Two daughters got honours and 2 sons got masters. Published by Singapore Soka Associations.
To be able to bring up 4 children to excel in their studies is rare.My uncle who died in his fifties might be due to overwork trying to bring up 4 children who can study.