Back in the day couldn't the feudal japan people have more? Or at least Daimyos and up could, not sure...
Sure. The men went out to fight & make diplomacy, the wife was the leader of the household and had all the money.
If a samurai wanted to spend money on something, he ordered his wife to do so, as it was her duty. Though... she had the money. And therefore a very large influence...
We can transfer all your gems/gold to your wife then, and you have to ask...
And no, there were not several wives... just one. Though he could visit Geishas or have a concubine or more, of course.
<-to my knowledge.