I've never been able to find the origin of the name.

The origin of the name has been lost to history.

The origin of the name is not known for certain.

There is another story about the origin of the name.

This is the most likely origin of the name here.

The origins of the city's name have never been clear.

Several stories lead to the origin of the town's name.

The origins of the name are still up for debate.

There are two stories about the origin of the name.

Several stories have been offered as to the origins of the town's new name.