HI
I think this Berthold (born in 1879) is not the right one (His father Meier married in 1889 !).
I think the right one is Berthold Rothschild born on th 05 december 1889 in Hoof, Kassel, Hessen, Germany and who married Sarah Adler born on the 25 june 1893 in Rüsselsheim, Gross-Gerau, Hessen, Germany (marriage : 30 december 1919 in Frankfurt am Main, Hessen, Germany).
I do agree with the brothers and sister.
Thanks you for your note and your work. I think that I just copied this connection over from the MyHeritage trees, which are in error sometimes (or often). Please give me a day to check. I'm happy to make the changes needed, including severing the MyHeritage links. Please feel free to do it yourself if you prefer.
Best regards, Eric