Johann Moritz was the son of Dietrich Weyckart and Agnes Bilger. He married first to Johanna Gaisser on 18 Jan. 1746 in Freudenstadt, Württemberg. He married second to Anna Maria Stöffler on 10 July 1764 in Freudenstadt. He was a dyer, and served in the court and on the city council in Freudenstadt.