PRONOUNS, RELATIVE AND INTERROGATIVE. Which thatWhich that. “Spite of his spite which that in vain
Doth seek to force my fantasy.” INGELEND (A.D. 1560). This use of which that consecutively is common in Chaucer, but not in Elizabethan authors. When it is remembered that which was originally an interrogative, it is easier to understand how that may have been added to give a relative force to which.