The given name Thomasina is a feminine form of the masculine name Thomas, which is derived from the Aramaic name Toma, meaning "twin". The name Thomasina traces its origins to the Middle Ages and has been used predominantly in the English-speaking world, particularly in Britain.

Thomasina is believed to have its roots in the Greek word "didymos", which also means "twin". This connection to the concept of twins is likely due to the biblical story of the apostle Thomas, who was known as the "Doubting Thomas" for initially doubting the resurrection of Jesus Christ.

One of the earliest recorded instances of the name Thomasina dates back to the 12th century. In 1175, a woman named Thomasina de Audley was mentioned in the Pipe Rolls of Staffordshire, England. This historical record suggests that the name was already in use among the nobility during the medieval period.

Throughout history, several notable individuals have borne the name Thomasina. One prominent example is Thomasina Petrucci (1469-1518), an Italian Renaissance noblewoman and patron of the arts. She was a member of the influential Petrucci family and played a significant role in the cultural life of Siena during the 15th and 16th centuries.

Another historical figure with the name Thomasina was Thomasina von Bircken (1595-1642), a German Baroque poet and writer. She was known for her religious and lyrical poetry, which was widely praised during her lifetime.

In the realm of literature, Thomasina is the name of a precocious young woman in the play "Arcadia" by Tom Stoppard, which premiered in 1993. The character's intellectual curiosity and thirst for knowledge make her a memorable figure in the play's exploration of themes such as science, mathematics, and the human condition.

Thomasina Coventry (1675-1689) was an English noblewoman and heiress who lived during the late 17th century. She was the daughter of Sir John Coventry and gained notoriety for her involvement in a high-profile legal case regarding her inheritance.

Finally, Thomasina Russell (1690-1766) was a British philanthropist and the first woman in England to establish a medical charity. She founded the Royal Bethlem Hospital, one of the oldest institutions for the treatment of mental health in Europe.

These examples showcase the rich history and diversity of individuals who have carried the name Thomasina throughout the centuries, reflecting its enduring appeal and cultural significance.