Nielsen Hayden genealogy

We are Patrick and Teresa Nielsen Hayden, a married couple of writers and editors in Brooklyn, New York. The database that starts at these two roots shows who we believe to be our (known) ancestors, plus collateral relatives and associated lines that interest us. Everything here is based on at least one primary or secondary source, public or private, but all of it is subject to revision as new knowledge emerges. All genealogy is a work in progress.

This database also includes the ancestries of several friends and colleagues whose genealogy we're intermittently researching.

Click here for notes on a few of our sources; here for the Teresa Nielsen Hayden Medieval Ancestry Lists Page; and here for several thousand too many words about genealogical trivia.