MacKenna Last Name: Meaning and Heraldic Roots
MacKenna is an established spelling of the Irish surname McKenna.
Records show MacKenna as one of the forms McKenna took over time.
A coat of arms belongs to a particular family line rather than to everyone named MacKenna, so the heraldry linked to McKenna is a starting point, not an automatic right. Research your MacKenna family history with a full surname report and painted coat of arms.