Who where the six people shipwrecked in 'Swiss Family Robinson'?

In the book by Johann Wyss, Mr and Mrs Robinson had four sons with them, although in the Disney movie there were only three. (Jack was the boy left out by Disney).

I can't find any reference to the names of the father and mother, who were a Swiss pastor and his wife, but their four sons were Franz, Fritz, Ernest and Jack. The book is written in the first person by the father who refers throughout the book to "my wife". Because of the title of the book, the family in later televised or film version were called Robinson, but I think that, given that the family were German speaking Swiss, this is unlikely. If you care to trawl through the book and find the real names, here is a site with the text on it.

ccel.org/w/wyss/swiss/swiss.html no longer exists

William Robinson
Elizabeth Robinson
Jack Robinson
Ernest Robinson
Fritz Robinson
Francis Robinson

Swiss Family Robinson (1940)
http://www.imdb.com/title/tt0033124/

Karl Robinson
Lottie Robinson
Fred Robinson
Ernie Robinson
Helga Robinson

"Swiss Family Robinson" (1975)
TV series 1975-1976
http://www.imdb.com/title/tt0072573/

Ernest Robinson
Marie Robinson
Elizabeth Robinson
Franz Robinson
Johann Robinson

"Swiss Family Robinson" (1976)
TV series
http://www.imdb.com/title/tt0068137/

I'll let you sort out the Japanese TV series.
http://www.imdb.com/title/tt0168341/

Not in the book but in the TV series, the names of the family members are David (the father), Elizabeth (the mother), Ernst (the son), Johanna (the daughter), Christina (the younger daughter) and Bruno (the dog).
Premiered: September 1, 1998
Last Aired: October 15, 1998

http://www.tv.com/swiss-family-robinson/show/3465/summary.html

From the 1940 version:

The parents were William and Elizabeth Robinson.
Children (sons) were Jack, Ernest, Fritz and Francis.

From the 1960 version: The Robinson Family: Mother and Father (Dorothy McGuire and John Mills)--who are never referred to by name--and three sons Fritz (James MacArthur), Ernst (Tommy Kirk), and young and mischievous Francis (Kevin Corcoran), are fleeing from Bern during the Napoleonic Wars. Jack is omitted.

http://www.imdb.com/title/tt0033124/

https://en.wikipedia.org/wiki/Swiss_Family_Robinson_%281940_film%29

https://en.wikipedia.org/wiki/Swiss_Family_Robinson_%28film%29