Gwendlyon is a unique and melodic female given name of Welsh origin, derived from the elements "gwen" meaning white, fair, or blessed, and "dydd" denoting day or light. This uncommon name was likely created as a variant spelling of Gwendolen or Gwenllian, adding an extra syllable for effect. It is pronounced as /ˈɡwɛndlɪən/. Despite its rarity, Gwendlyon carries a certain elegance and charm that sets it apart from more common names.
The name Gwendlyon experienced a modest level of popularity during the mid-20th century, with an average of about seven babies being named Gwendlyon each year between 1941 and 1962. The peak years were 1957 and 1961, when eight babies received this name in total. However, it appears that the name's popularity was not sustained over time, as there are no significant spikes or trends apparent from these statistics alone.