Cathleen is a feminine given name of Irish origin. It is derived from the Irish name "Caitlín", which is a diminutive form of the name "Cait" or "Cat". The name "Cait" is derived from the Old Irish name "Caitlinn", which means "pure" or "virginal".
The name Cathleen has been popular in Ireland and among Irish communities around the world for centuries. It was brought to prominence by the Irish literary revival of the late 19th century, when it was used as a pen name by several female writers.
In literature, Cathleen ni Houlihan is a central character in William Butler Yeats' play "Cathleen ni Houlihan", which tells the story of the Irish struggle for independence. The name Cathleen has also been popularized by other works of Irish literature, such as Seamus Heaney's poem "Cathleen ni Houlihan".
Today, Cathleen remains a popular given name in Ireland and among Irish communities around the world. It is often spelled variations such as Kathleen or Caitlin, but its origins and meaning remain the same: pure or virginal.
The name Cathleen experienced a significant increase in popularity during the early to mid-20th century, peaking around World War II. Between 1940 and 1955 alone, there were over 17,000 births registered with this name, reaching its highest point in 1956 with 1,115 births. However, the popularity of Cathleen has declined significantly since then, with fewer than 50 births per year recorded from the late 1980s onwards. In recent years, there have been fewer than 20 births registered annually with this name.