Other sources tells that it's an Israel name, and means Rejoicing.
They say that:
People with this name have a deep inner desire for a stable, loving family or community, and a need to work with others and to be appreciated.
People with this name tend to be creative and excellent at expressing themselves. They are drawn to the arts, and often enjoy life immensely. They are often the center of attention, and enjoy careers that put them in the limelight. They tend to become involved in many different activities, and are sometimes reckless with both their energies and with money.
- But there are places in northern Africa where Marnel is used as an invective. It's often used towards children who cannot behave and hurt others with their rude actions.
"He was beating the smaller children, he thinks like a Marnel sometimes!"