Bellatrix Lestrange & Mrs. Bradley

[goodnight_moon5]

No: HPFGUIDX 77144

Just had an "AHA!" moment myself - Gladys Mitchell's 
http://www.gladysmitchell.com/ infamous psychologist/sleuth Mrs. 
Bradley's full name is Beatrice Lestrange Bradley.  The names are too 
similar for JKR to not be giving a 'hat tip' to Gladys Mitchell 
(consciously or subconsciously) but I wonder if there might not be 
some clues there?
There were a lot of bathtub deaths in Gladys Mitchell's mysteries!!

Any thoughts? 

Lauri