I would love to know, why isn't this beautiful baby name more popular? It's gorgeous, and Claire (#50), Clare (#679) and Clara (#151) are in the top 1000, as well as most Bella variations. Belle itself is just outside the top 1000.
Clarabel has two negative associations weighing it down: Clarabell the Clown, and Disney's Clarabelle Cow. However, it has been a long time since these two characters appeared in modern media, and the majority of the population has no idea they ever existed. In twenty years when your baby Clarabel is full grown, the following two associations will be a distant memory in the mind of grandma and grandpa.
Clarabell the Clown was actually a man, played by three different actors during the lifespan of "The Howdy Doody Show," which aired between 1947 and 1960. The clown was loved by the audience, and didn't speak until the end of the last episode. I could not find the reason behind naming a male clown a female name.
Clarabelle Cow was mainly seen in the 1930's in black and white animated features, but appeared in later works such as "Who Framed Roger Rabbit" and "The Prince and the Pauper," which the current generation will hardly be exposed to.
On to the good stuff! The following associations will boost the name of Clarabel or Claribel. Silent film actress Clara Bow was made famous in the 1920's and well-loved, known as the "it girl." Saint Claire was born Chiara, the Italian form of the name. The spelling Claribel was used by Edmund Spenser in "The Faerie Queene," where Lady Claribel is "The fairest Lady then of all that living were." Shakespeare had a character named Claribel, Princess of Naples, in "The Tempest." To top things off, "Claribel" was a poem written by the great Alfred Lord Tennyson.
In 2011, only the spellings Clarabelle and Claribel were used. Clarabelle was given to nineteen baby girls (21 in 2010) and Claribel was given to nineteen as well (11 in 2010). Clarabel and its alternate spellings mean "clear, bright, famous" in Latin and English.
Clariandra is another gorgeous elaboration of Claire, this time with the -andra root, which is Greek for "man." The shifted meaning would then be "clear, bright woman," or "famous woman." Clariandra was a variant used in the Middle Ages alongside other fanciful, frilly names such as Diamanda and Splendora - perhaps the "cutesy" names of their time. Possibly the only mention of her was in the year 1248.
Claren is a rare male variant of Clarus.