“The coat of arms for the parent house of Byrom of Byrom was first recorded in 1663 but had been used prior to 1558 when it was first copied (with a difference) by the Byroms of Salford and confirmed to them in 1613. (Canon Raines)”

Obtained from “The Byron Chronicle: A History of the Byron and Byrom Families from 1066-1800” by Mark Bennett Byron III.