If you do nothing else today, have a look at 'Family Tree Rhapsody' on YouTube.
..... But I've just been looking at the WW2 Civilian Deaths Index on Ancestry and found a couple who died in the Blitz.
Nothing unusual in that, sadly, but I then discovered they had four daughters aged between fifteen and none, and now I'm wondering where they were at the time.
Charles Saunders, his wife Louisa (nee Culpin) and her sister Lillian, died at the Saunders home, Prospect Terrace, St Pancras in October 1940. No mention is made of their four daughters.
And, just to make it even more intriguing, Louisa died three days after the others. This, presumably, is why the Probate Index shows her as a widow.
I shall keep looking for the girls.