the astrological twins
Pronunciation: TAM-sin, tom-ah-SEE-nah
Potential nicknames: Tam, Tams, Tammy, Tommie, Sina, Tina, Tansy
Alternate spellings: Tamzin, Tamasin, Tomasin, Thomasin, Tamsen
Origin: Tamsin is the English short form of the name Thomasina, which is the Aramaic feminine variant of Thomas. Tamsin, Thomasina, and Thomas mean "twin." It is really up to you if you want to name a non-twin Tamsin or Thomasina, since people name non-twin boys Thomas regularly.
Popularity: There were only 9 baby girls named Tamsin in 2010, which means it did not rank on the top 1000. In 2011 there were only 8 baby girls named Tamsin and 6 named Thomasina. Thomasina only ranked once - in 1932 at #970.
Fun facts for Tamsin: (1) Tamsin was used as a given name about a century after the Victorian Era. (2) Tamsin has been traditionally used in Cornwall. (3) Tamsin was a 1999 novel by Peter S. Beagle - the same guy that wrote The Last Unicorn. (4) Actresses Tamsin Egerton, Tamsin Heatley, Tamsin Olivier, Tamzin Merchant, Tamasin Ramsay, Tamzin Outhwaite and Tamsin Grieg. (4) Thomasin Yeobright was a character in The Return of the Native by Thomas Hardy. (5) Tamsen is another alternate spelling - Tamsen Fadal is a TV personality and Tamsen Donner was a member of the ill-fated Donner Party. Of the alternate spelling Tamasin, Tamasin Day-Lewis was a chef and sister of Daniel Day-Lewis, and Tamasin Berry-Hart is an author.
Fun facts for Thomasina: (1) The Three Lives of Thomasina was a 1963 Disney film about a cat and her family. (2) Thomasina Coverly was a character in "Arcadia," a play by Tom Stoppard. (3) Thomasina Tittlemouse was a character used by Beatrix Potter. (4) Through the name Didymos, the name Thomasina is linked to the twelve disciples of Jesus.