she isn't the 13th one (in her article), nor the 14th one (here), but the 15th holder of this title

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Cayetana Álvarez de Toledo
  Done es:Marquesado de Casa Fuerte ( &   Done es:Cayetana Álvarez de Toledo ) & its talk:   Done
  Done Marquess of Casa Fuerte (   Done Cayetana Álvarez de Toledo )
  1. 15th one. 14th one. Cayetana Álvarez de Toledo y Peralta-Ramos, 15th Marchioness of Casa Fuerte
  2. 14th one. 13th one. Juan Illán Álvarez de Toledo y Girau, 14th Marquess of Casa Fuerte
  3. 13th one. 12th one. Julio Heredia y Halcón, 13th Marquess of Casa Fuerte
  4. 12th one: Alonso de Heredia y del Rivero, 12th Marquess of Casa Fuerte & 14th Marquess of Bedmar (…).His grandson in 1985 became the 13th one (Julio Heredia y Halcón).
    1. It there wasn't in the list, so it was thought, the total: 14 instead these 15 titular ones.
  5. 11th one. It's ok: Illán Álvarez de Toledo y Lèfebvre, 11th Marquess of Casa Fuerte

and, reverse:

  • Alonso de Heredia y del Rivero, 12th Marquess of Casa Fuerte & 14th Marquess of Bedmar (…)​ His grandson in 1985 became the 13th one (Julio Heredia y Halcón).
  • Julio Heredia y Halcón, 13th Marquess of Casa Fuerte
  • Juan Illán Álvarez de Toledo y Girau, 14th Marquess of Casa Fuerte
  • Cayetana Álvarez de Toledo y Peralta-Ramos, 15th Marchioness of Casa Fuerte

--Pla y Grande Covián (talk) 16:40, 27 April 2023 (UTC). Clearer. --Pla y Grande Covián (talk) 17:19, 27 April 2023 (UTC)Reply

Talk:Cayetana Álvarez de Toledo#15th Marchioness of Casa Fuerte · I read at her article, her father: the 14th Marquess of Casa Fuerte ( #Biography section ). It's another source of information, to what I did: above. --Pla y Grande Covián (talk) 19:00, 27 April 2023 (UTC)Reply