Tales and legends

I love reading tales and legends.
Fairies, elves, mermaids and other fantastic creatures: it's fascinating!
I've found a very good book with legends from each region of France.
In Bretagne there are many interesting stories but yesterday night last night I read one from the region called « Poitou-charentes ».
I will try to make write a short summary, hoping my mistakes won't spoiled spoil this nice legend.

'Nice' has slightly diminutive connotations of inoffensiveness, the phrase 'you're a nice man' could almost be taken as an insult - it implies that someone's not very exciting or interesting. 'Great legend' maybe.)  

Melusine the Fairy
The fairy Melusine lived in the Forest of Colombiers, spending her days near the fountain of the Fairies. One day, she met Raymondin, son of a rich count, wandering in the forest. As soon as he saw Melusine, Raymondin fell deeply in love and begged her to marry him.
The beautiful fairy accepted, provided that Raymondin swears swore to give her the free disposition of her Saturdays free for bathing, and never tries tried to see her that day. She insisted on the fact that, if he transgresses transgressed this rule, she would have to leave him immediately. Raymondin promised and they got married.

This last sentence is fine, but in slightly more litterary English you could say:

Raymondin gave his promise and they were wed

As a wedding gift, Raymondin asked his father to give him for lands, where Melusine built wonderful castles, the most beautiful being the one of at Lusignan. She also gave birth to ten sons.

Raymondin's brother, jealous of their happiness, swore to sow discord between the couple. One Saturday he went to Lusignan and asked to see Melusine. 

Raymondin explained that it was impossible to see her that day because she was taking a bath at the top of the tower.
The brother burst out laughing and made fun of the credulity of Raymondin. If Melusine was hiding from him every Saturday, it must be not wouldn't be to swim, but to meet her lovers!
From that day, Raymondin was plagued by doubt and curiosity. Was Melusine unfaithful? Finally, out of patience, he climbed the tower and made a small hole in the door. What he saw terrified him:
Melusine was plunged into a large bath, combing her long hair. From the navel to the top of her head, she had a wonderful woman's body, but from the navel to the feet, she had a serpent's tail!
Knowing that she was discovered, Melusine wept over the betrayal of her husband and turned into a winged serpent. She fled through the window, leaving the poor Raymondin in despair.
Unable to forget the loss of his wife, he became a hermit and retired to the mountains.
Nowadays, we say that, during on windy nights, you can hear at the top of the towers of Lusignan the shrieks of Melusine the shrieks of Melusine, at the top of the towers of Lusignan, crying on about her fate, her children and hor her lost love. 

In more litterary English:

Nowadays To the present day ('nowadays' is quite informal') we say that it is said that, on windy nights, you can hear the shrieks of Melusine, at the top of the towers of Lusignan, lamenting her fate, her children and her lost love. 

Good job!

Does someone have a nice legend to share? ^^