Blenkinsopp seems to originate in the early medieval Cumbric language, probably as blaen 'top' + kein 'back, ridge' (thus 'top of the ridge').
blˈɛŋkɪnsˌɑːp sˈiːmz tʊ ɚɹˈɪdʒᵻnˌeɪt ɪnðɪ ˈɜːli mˈɛdɪˌiːvəl kˈʌmbɹɪk lˈæŋɡwɪdʒ, pɹˈɑːbəbli æz blˈiːn tˈɑːp plˈʌs kˈeɪn bˈæk, ɹˈɪdʒ ðˈʌs tˈɑːp ʌvðə ɹˈɪdʒ.