Henry de Grey, 3rd Earl of Kent, was an English nobleman born in 1400. He was the son of Henry de Grey, 2nd Earl of Kent and Margaret de Holand. Henry became the Earl of Kent in 1445 after his father's death and was known for his involvement in the politics of the Wars of the Roses. Throughout his life, Henry de Grey held various positions, including serving as a member of the House of Lords. He was also a prominent landowner, with estates in Kent and Suffolk. He died in 1475, leaving behind a legacy tied to the English nobility.