One of the most famous stories is the monograms of the letters chi and rho, the first two letters of the Greek words Christos.
Charlemagne was the first ruler to put his monogram as a signature on documents. This custom was not until 13 Century by French and German princes continued. Later relative merchants’ monograms as a trade mark and the first printers and artists used them as signatures on documents and paintings.
Nowadays individual monograms will especially as its own trademark, and therefore reflect the personality of the Ringbearer.