sˌɜːɹ ˈɪvɑːɹ kˈɑːlkwəhˌaʊn, θˈɜːɾiəθ lˈɛɹd ʌv lˈʌs ænd θˈɜːɾi sˈɛkənd tʃˈiːf ʌv kˈɑːlkwəhˌaʊn səksˈiːdᵻd æz tʃˈiːf ʌvðə klˈæn ɪn nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi ˈeɪt.
Sir Ivar Colquhoun, 30th Laird of Luss and 32nd Chief of Colquhoun succeeded as chief of the clan in 1948.