In the cartoon TV series "Tom and Jerry", what was the name of Jerry's nephew?

"Tom and Jerry" is an American animated series of comedy short films created in 1940 by William Hanna and Joseph Barbera. It centers on a rivalry between the title characters Tom, a cat, and Jerry, a mouse. Many shorts also feature several recurring characters.

Nibbles is a small grey mouse who often appears in shorts as Jerry's nephew. He is a carefree individual who very rarely understands the danger of the situation, simply following instructions the best he can both to Jerry's command and his own innocent understanding of the situation. This can lead to such results as "getting the cheese" by simply asking Tom to pick it up for him, rather than following Jerry's example of outmaneuvering and sneaking around Tom.

Many times Nibbles is an ally of Jerry in fights against Tom, including being the second Mouseketeer. He is given speaking roles in all his appearances as a Mouseketeer, often with a high-pitched French tone. However, during a short in which he rescued Robin Hood, his voice was instead more masculine, gruff, and cockney accented.