Esrom
Esrom is the Greek-form name that the older English tradition kept in the genealogies of Jesus. UPDV renders the same figure as Hezron, harmonizing the New Testament witnesses with the Hebrew form preserved in the Old Testament. He stands in the line of Judah and Perez, an ancestor in the Messianic descent.
In Matthew's Genealogy
Matthew's genealogy of Jesus traces the line through Judah: "and Judah begot Perez and Zerah from Tamar; and Perez begot Hezron; and Hezron begot Ram" (Mt 1:3). Hezron — the figure called Esrom in the older versions — is therefore son of Perez and father of Ram, holding the third generational link after Judah.
In Luke's Genealogy
Luke's ascending genealogy lists him in the same Judah-to-Perez sequence: "the [son] of Amminadab, the [son] of Admin, the [son] of Arni, the [son] of Hezron, the [son] of Perez, the [son] of Judah" (Lu 3:33). Hezron stands two steps above Perez and three above Judah, anchoring the line that runs back through the patriarchs.