ɪɡnˈæsɪˌoʊ də bˈoʊntʃiə mˌæntɚɹˈoʊlə pɹˈuːvd hɪz stˈæɾəs ʌv hɪdˈælɡoʊ ɪn wˈʌn θˈaʊzənd sˈɛvənhˈʌndɹɪd twˈɛnti fˈaɪv, tɹˈeɪsɪŋ hɪz ˈænsɛstɚz bˈæk tə doʊmˈɪŋɡoʊ bˈoʊntʃiə flˈoːɹuːt sˈɜːkə wˈʌn θˈaʊzənd sˈɪkshˈʌndɹɪd fˈoːɹɾi fˈaɪv, ɐ dᵻsˈɛndənt ʌvðə bˈoʊntʃiə kˈɑːsə sˈoʊlɚɹ ʌv ɐstˈiːsuː, wˌɛɹ mˈɛmbɚz ʌvðə fˈæmɪli ɑːɹ ɐtˈɛstᵻd ˌʌndɚ ðə nˈeɪm bˈɑːfoʊntʃˌiə ˌʌp tə wˈʌn θˈaʊzənd sˈɪkshˈʌndɹɪd ˈeɪtiːn.
Ygnacio de Bonechea Manterola proved his status of Hidalgo in 1725, tracing his ancestors back to Domingo Bonechea (floruit circa 1645), a descendent of the  Bonechea Casa Solar of Asteasu, where members of the family are attested under the name Bofonechea up to 1618.