koʊˌɪnsɪdˈɛntəli, ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪtiːn, hɪz lˈeɪt ɹˈɛlətˌɪv wˈɪlhɛlm vˈɑːn mˈɜːbɑːx hɐdbɪn ɐsˈæsᵻnˌeɪɾᵻd æt ðə dʒˈɜːmən ˈɛmbəsi ɪn mˈɑːskoʊ baɪ lˈɛft sˈoʊʃəlˌɪstɹˌɛvəlˈuːʃənˌɛɹiz wˌaɪl sˈɜːvɪŋ æz dʒˈɜːmən ɐmbˈæsədɚ tə ɹˈʌʃə.
Coincidentally, in 1918, his late relative Wilhelm von Mirbach had been assassinated at the German embassy in Moscow by Left Socialist-Revolutionaries while serving as German Ambassador to Russia.