Johann Kaspar Aders 1719-1798 had linen and cotton factory at Elberfeld ("Vicarie" in Berliner Straße) his second wife was Anna Luise Phillipine Hofius, daughter of a pastor from Iserlohn. His sons were
1) Johann Jakob 1768-1825 (QV*) who married 20.5.1793 Anna Helena Brinck (died 1844) daughter of Johann Heinrich Brinck (1743-1817) banker by his wife Maria Elizabeth (nee Houberg)
their children 1) Auguste born 1794 married 16.4.1819 Karl Friedrich Harkort (1788-1862) son of Johann Caspar Harkort and his wife Henrietta (nee Elbers). His younger brothers…