Add relationship between artists in their pages

Rulers have links to other rulers with whom they have a relationship. For example, the page of the Queen Elizabeth II https://en.numista.com/catalogue/ruler.php?id=275 has

• Parents: George VI and Queen Elizabeth, The Queen Mother
• Son: Charles III

There are artists (engravers and designers) with relationship with others artists. For example:

• Anders Jonsen Lunder https://en.numista.com/catalogue/artist.php?id=2461 is grandfather of
  • Andreas Jonsen Lunde https://en.numista.com/catalogue/artist.php?id=2457
     
• Thomas Wyon the Elder https://en.numista.com/catalogue/artist.php?id=1768 is father of
  • Thomas Wyon the Younger https://en.numista.com/catalogue/artist.php?id=212
  • Benjamin Wyon https://en.numista.com/catalogue/artist.php?id=399 is father of
    • Allan Wyon https://en.numista.com/catalogue/artist.php?id=2407 is father of
      • Allan Gairdner Wyon https://en.numista.com/catalogue/artist.php?id=2408
    • Joseph Shepherd Wyon https://en.numista.com/catalogue/artist.php?id=900
    • Alfred Benjamin Wyon https://en.numista.com/catalogue/artist.php?id=1802
       
• William Wyon https://en.numista.com/catalogue/artist.php?id=15 is father of
  • Leonard Charles Wyon https://en.numista.com/catalogue/artist.php?id=46
     
• Daniel Fehrman https://en.numista.com/catalogue/artist.php?id=2429 is father of
  • Carl Gustaf Fehrman https://en.numista.com/catalogue/artist.php?id=404   

The relationship can be written in the description of the artist (and be translated to each language of Numista), but it would be better to have specific fields with these relationships.

This idea would introduce quite some complexity in the code without clear benefit. For example, relationships like ‘stepfather’ (Anders Jonsen Lunder / Caspar von Barth) and ‘uncle’ (Andreas Jonsen Lunde /  Gabriel Andersen Lunder) would still not be supported.

The current solution with relationships mentioned in the description is much simpler and more powerful.