Contemporary history dwells chiefly on his great personal influence with the Lombard king Luitprand, and with his successor Rachis; it was largely through his tact in dealing with these princes in a variety of emergencies that the exarchate of Ravenna was rescued from becoming a Lombard kingdom. A correspondence, of considerable extent, and great interest, between Zacharias and Saint Boniface, the apostle of Germany, is still extant, and shows how great was the influence of this pope on events then passing in France and Germany; he encouraged the deposition of Childeric, and it was with his sanction that Boniface crowned Pepin as king of the Franks at Sissons in 752. Zacharias is stated to have remonstrated with the emperor Constantine Copronymus on the part he had taken in the iconoclastic controversy. He died 14th March 752, and was succeeded by Stephen II
from the 9th edition (1888) of an unnamed encyclopedia.