This is a particularly messy can of worms. Hearnden, Herndon, and all its alternate spellings, are also cognates of Harrington, Herrington, Arrington, and so on.
I am interested in Benjamin Hearnden, an early resident of Rhode Island. Hearnden-25 is the guy, acknowledging a father named John Errington. But then you can find him, in much better form as Harrington-281, except that one is the son of a James Harrington. Assuming these are the same men, start looking at their wives. Elizabeth White was the daughter of a William White, not the guy on the Mayflower, but an even more interesting one, who was an alchemist. Read about that at White-1947. You'll see he has a couple daughters named Elizabeth who marries Benjamin Hearnden. I bet between Hearnden, Herndon, Pray, and Harrington, there will be a half dozen dupes just for her.
I have been merging to try to clear up some of the gedcom messes right along, but I need some direction on this one. Who determines what spelling of Harrington Herndon Hearnden etc is the right one? What do you merge into? If you don't, you will have many multiple runs for the same people, which I know is against our goal of one world tree. But I have found every time I try to merge into a differently spelled last name, I don't have a choice which one is the merger and which is a mergee. It complicates things.
Would appreciate some guidance before I make it worse than it is. Thank you. Thank you, Carolyn Adams