Where the name came from has apparently been lost to history.

The name they had for themselves is lost to history.

I am the king lost to history, a prince of the past.

No further word of Hill was ever received and his later life has been lost to history.

About four months later, however, for reasons lost to history, he was executed.

Whether they thought it was a curious thing or not is lost to history.

The author of a traditional historical novel should therefore focus more on the people who have been lost to history.

But nearly everyone then alive was lost to history, thought Christian.

The origin of the name has been lost to history.

He died in exile, with the date of his death lost to history.