Under the graph, google has links to open up excerpts of usage from various time periods. Looking at a bunch of them, it seems that most of them come from Lede

Under the graph, google has links to open up excerpts of usage from various time periods. Looking at a bunch of them, it seems that most of them come from Lede being a proper name. I also saw a couple occurrences as a verb as in "it ledes to water".