ɐkˈoːɹdɪŋ tə ðə hˈɪstɚɹi ʌv hjˈuːɡoʊ fˈælkændəs, wˌɛn stˈiːvən ɹᵻtˈɜːnd wɪððə kˈɪŋ ænd kˈoːɹt tə pˈælɚmˌoʊ ˌɔn twˈɛnti mˈɑːɹtʃ wˈʌn θˈaʊzənd wˈʌnhˈʌndɹɪd sˈɪksti ˈeɪt, ɹˈɪtʃɚd ænd ˈʌðɚ kˈoːɹɾɪɹz plˈɑːɾᵻd tə hæv hˌɪm ɐsˈæsᵻnˌeɪɾᵻd ˌɔn pˈɑːm sˈʌndeɪ, fˈoːɹ dˈeɪz lˈeɪɾɚ.
According to the history of Hugo Falcandus, when Stephen returned with the king and court to Palermo on 20 March 1168, Richard and other courtiers plotted to have him assassinated on Palm Sunday, four days later.