Retha is a feminine name that emerged as a shortened form of names ending in '-retha' such as Aretha or Maretha. It may also derive from the Welsh name Rheta, meaning 'ardent' or 'zealous.' In some cases, it appeared as a variant spelling of Martha. Retha gained modest popularity in the United States during the early 20th century, particularly in the 1910s and 1920s, but has since declined in usage. The name carries a vintage charm characteristic of its era, with a soft, melodic sound. While uncommon today, Retha might appeal to parents seeking a simple yet distinctive name with historical roots. Famous bearers include American gospel singer Retha Strickland and actress Retha Grey from the silent film era.

Margaritis is a feminine name of Greek origin, functioning as a diminutive or variant of Margaret. Its root comes from the Greek word 'margarites,' meaning 'pearl.' This name is predominantly found in Greek communities and is relatively uncommon outside of Greece and Greek diaspora populations. Margaritis carries the connotations of beauty and preciousness associated with pearls. The name has a classical, traditional feel with its Greek ending, making it distinctive yet connected to the widely recognized Margaret family of names. While rare in most Western countries, it represents a cultural heritage option that connects to both ancient Greek naming traditions and the international popularity of Margaret variations.