Variations of "The Faithful Wife"

There are variations of this story from all over the world. None of them seem any newer or older than the others.
In Russia, the story is about a king and a queen instead of a knights daughter and a commoner. In this Russian version, the king leaves for battle and in the first version the husband leaves for building. They both had the importance of three though. In "The Faithful Wife" it's three men who come to ask for her hand, and in "The Lute Player" the king is gone for three years. In "The Lute Player" the queen cut off all of her hair and played a boy to save her husband. In "The Faithful Wife" the woman barely does anything to save her husband. She just remains faithful. In "The Lute Player" the wife goes to extraordinary lengths to stay faithful to her husband and not be lusted after by the heathen king of the other country. In "The Lute Player' the king accused his wife of being unfaithful. In "The Faithful Wife" the husband and wife both knew of each others faithfulness. There was a celebration at the end of both stories, but of course the king and queen's celebration was bigger. The queen also had to prove her faithfulness to her husband in "The Lute Player" and in "The Faitful Wife" the proof was written everywhere.
The story becomes recognizable to me when I related it to Time Traver's Wife.
They all teach the same lessons I think. It teaches you to be faithufl to your husband! I think everyone should be faithful though!!