Distribution clause

I’m trying to understand in layman’s terms what the following distribution clause means…

*My trustees shall hold my residuary estate and income thereof upon trust:-
for my wife if she shall survive me absolutely BUT if this gift shall fail then

Upon trust in two equal shares as hereinafter follows:

As one such share thereof for Daughter if she shall survive me absolutely BUT if this gift shall fail then for such Daughter’s children shall survive me and shall reach the age of 18 (if more than one in share shares) absolutely

As one such share thereof for Son if he shall survive me me absolutely BUT if that gift shall fail then fail on teh following trusts: - son’s daughter / partner*

I am I right in thinking it all goes to the wife if she’s alive? and then the children in trust if she’s dead?

Haven’t found any trust documents…

Yes, it says “for my wife…absolutely”.

What trust documents would you expect to see? I think you may have a slight misunderstanding there. This is simply the common wording meaning that the PRs should hold the residuary estate for the widow.