In the same year, Wächter completed a semester in Heidelberg to study under Thibaut and Welcker, but then returned back to Tübingen.

[3] As early as December 1818, Wächter passed his Erstes Staatsexamen (the first state examination) with the grade "Excellent".

In 1851, Wächter went to Lübeck and became the president of the Oberappellationsgericht der vier Freien Städte succeeding Heise.

[1] He was buried on the Röcknitz manor (today a district of Thallwitz near Leipzig), which his youngest son Karl Alfred von Wächter had acquired in 1872.

After his death, a street in Leipzig's south-west suburb (Musikviertel) was named after him in 1884, and in 1897 the Leipzig City Council established the "Karl-Georg-von-Wächtersche Stiftung" (Karl Georg von Wächter Foundation), the interest on which, amounting to 120 gold marks annually, paid for a scholarship.

The elder of the two sons, the lawyer and politician Oskar von Wächter (1825–1902), was also a member of the Second Chamber of the Württemberg Estates.

He wrote a biography of his father and posthumously published his Pandekten and lectures on German criminal law.

The much younger son, the Royal Chamberlain Baron Karl Alfred von Wächter (1842–1914), studied agriculture in Hohenheim and earned a doctorate in philosophy in Leipzig, where he had already attended the Nikolai Gymnasium.

In 1872, he bought the manor house in Röcknitz (Saxony) and in 1875 married Rosalie née Freiin von Soden from Stuttgart, daughter of Baron August Warren Hastings von Soden (1818–1859) and his wife Karoline (Lilli), née Holzschuher (1829–1912).