Choose a wife with care. The more pretty she is, the harder to woe her however, once you do, she will give you presents on a more frequent basis. The best wife is classed as exquisite in beauty and will give you a present every 24 hrs if she is kept happy and loved. There are 3 of them in Avonmora.
Your wife cares not what nation you belong to or if you change nations.
Just keep her walking on clouds and throw her a ruby ring every few days and she be happy