Stephen VI, pope (885-891), succeeded Pope Adrian III, and was in turn succeeded by Pope Formosus. In his dealings with Constantinople in the matter of Photius, as also in his relations with the young Slavonic church, he pursued the policy of Pope Nicholas I.
There is a problem in numbering the Popes Stephen -- see Pope Stephen II for the explanation.
from the 9th edition (1887) of an unnamed encyclopedia.
... with 28.5% under the age of 18, 6.3% from 18 to 24, 32.3% from 25 to 44, 21.1% from 45 to 64, and 11.8% who are 65 years of age or older. The median age is 37 years. ...