þ (thorn)

The letter ⟨þ⟩ (thorn) was still in use during the Early Modern English period but was increasingly limited to handwritten texts. In Early Modern English printing, ⟨þ⟩ was represented by the Latin ⟨Y⟩ (see Ye olde), which appeared similar to thorn in blackletter typeface ⟨𝖞⟩. Thorn had become nearly totally disused by the late Early Modern English period, the last vestiges of the letter being its ligatures, ye (thee), yt (that), yu (thou), which were still seen occasionally in the 1611 King James Version and in Shakespeare’s Folios.

[Source: Wikipedia]