W. van Zyderveld, inhabitant of Lexmond (near the Anna Maria van Schuurmanplein), wrote an article on Anna Maria van Schurman, Lexmond and Rhenen. Based on records in the archives at Utrecht, The Hague, Zederik and Vianen he discovered for example that her brother Johan Godschalck was buried in the Cunerachurch in Rhenen, like brother Hendrik Frederik and mother Eva von Harff.
See W. van Zijderveld, ‘Anna Maria van Schurman, Lexmond en Rhenen’ in: Lek en Huibert Kroniek 15 (2) 2013: 5-38.