But declared she would never leave Portugal

There was an Old Man of Moldavia (была /как-то/ старик из Молдавии),

Who had the most curious behaviour (у которого было самое = крайне чудное/странное поведение; to behave — вести себя, поступать, держаться);

For while he was able (ибо, пока он был способен),

He slept on a table (он спал на столе; to sleep).

That funny Old Man of Moldavia (этот смешной/забавный старик из Молдавии).

Moldavia [mɔl'deɪvɪə], curious ['kjuərɪəs], behaviour [bɪ'heɪvjə], able ['eɪbl]

There was an Old Man of Moldavia,

Who had the most curious behaviour;

For while he was able,