θiːəbˈɔːld mˈæθjuː wʌzðə sˈʌn ʌv səlˈɪsɪɾɚ ɹˈɑːbɚt mˈæθjuː ænd dʒˈoʊn jˈʌŋ, ænd ɡɹˈeɪtnˈɛfjuː ʌv sˌɜːɹ ˈɑːɹθɚ kˈɑːkɹeɪn, klˈæɹənsjˌuː kˈɪŋ ʌv ˈɑːɹmz fɹʌm nˈaɪntiːnhˈʌndɹɪd twˈɛnti ˈeɪt tə nˈaɪntiːnhˈʌndɹɪd fˈɪfti fˈoːɹ.
Theobald Mathew was the son of solicitor Robert Mathew and Joan Young, and great-nephew of Sir Arthur Cochrane, Clarenceux King of Arms from 1928 to 1954.