The demon Clauneck appears in the grimoires The Secrets of Solomon, Grimorium Verum, and Dictionnaire Infernal
From Grimorium Verum, Plangiere edition:
Clauneck
CLAUNECK has power over riches, can cause treasures to be found. He can give great riches to he who makes a pact with him, for he is much loved by Lucifer. It is he who causes money to be brought.
Timeline of related events
1700
1800
1817
Publication of Grimorium Verum (lists this demon)1818
Publication of Dictionnaire Infernal (lists this demon)