Thera

Thera is a Dutch feminine given name, functioning as a short form of Theresia, itself the Dutch and German form of Teresa. Teresa is of uncertain ancient origin, possibly derived from the Greek island name Thera (modern Santorini) or from a Greek root meaning to harvest or to reap. The name gained widespread use in Catholic Europe largely through the influence of Saint Teresa of Ávila, the sixteenth-century Spanish mystic and reformer. Related forms include Theresia, Teresa, Therese, and Terese.