Andreas was the son of Hannes Jerg Schwenck of Rotenbach, Württemberg. He married first to Waldburga Schuhmacher, widow of Hans Jerg Glauner, on 15 Oct. 1729 in Alpirsbach, Württemberg. He married second to Maria Magdalena Frick on 20 Oct. 1761 in Alpirsbach. He was a nailsmith.