wˈɪljəm wʌzðə lˈæst ʌvðə də sˈoʊlz fˈæmɪli tə hˈoʊld ðə tˈaɪɾəl lˈɔːɹd ʌv lˈɪdɪzdˌeɪl, ɪt wʌz bᵻstˈoʊd əpˌɑːn sˌɜː ɹˈɑːbɚt bɹˈuːs, ðɪ ɪlədʒˈɪɾᵻmət sˈʌn ʌv kˈɪŋ ɹˈɑːbɚt ðə bɹˈuːs.
William was the last of the de Soules family to hold the title Lord of Liddesdale, it was bestowed upon Sir Robert Bruce, the illegitimate son of King Robert the Bruce.