A Monogram, also known as a Cipher, is defined as a design made of two or more letters, usually, the first letters of a person’s names, used especially on clothing and writing paper.
Monograms and Ciphers date back as far as ancient Greece and the Roman Empire. Originally, identifying markings were used to emboss coins and other forms of money. Centuries later, and throughout the middle ages, it became common for artists to use their initials to mark artwork they'd created so it could be easily identified once it was in circulation.
The Duke and Duchess of Cambridge:
As time when on, monogramming became the official way for royalty and nobility to establish ownership over their personal property, servants, and armed forces. However, monograms are not to be confused with the more elaborate and symbolic coat of arms, which were initially used to distinguish sides in battles, communicate personal achievements, and distinguish one family from another.
Prince Charles and Princess Dianna:
Monograms may be designed for anyone and their spouse.