Kingdom

Castile title IDs

The de jure lands of Castile in patch 1.20.0.3: 2 duchies, 7 counties and 23 baronies, in the order the game nests them. Castile lies in the empire of Hispania (e_spain). Its capital is Burgos.

give_title k_castille

How to use these IDs in the console

In Steam, add -debug_mode to the game's launch options (Properties → General).
In the game, open the console with the ` key (§, ~ or ^ on some keyboards).
Paste the command (give_title c_burgos) and press Enter. Using the console turns achievements off for that game.

Castile duchy

give_title d_castilla

Burgos county
give_title c_burgos
- Burgos · province 1906give_title b_burgos
- Atapuerca · province 1907give_title b_atapuerca
- Lerma · province 1908give_title b_lerma
- Palencia · province 1905give_title b_palencia
Valladolid county
give_title c_valladolid
- Valladolid · province 1897give_title b_valladolid
- Simancas · province 1896give_title b_simancas
- Aranda de Duero · province 1898give_title b_arandadeduero
Soria county
give_title c_soria
- Soria · province 1901give_title b_soria
- Osma · province 1900give_title b_osma
- San Esteban · province 1899give_title b_sanesteban
- San Leonardo · province 1909give_title b_sanleonardodeyague
Cuellar county
give_title c_cuellar
- Segovia · province 1924give_title b_segovia
- Cuellar · province 1925give_title b_cuellar
- Uceda · province 1926give_title b_uceda
Olmedo county
give_title c_olmedo
- Olmedo · province 1915give_title b_olmedo
- Coracera · province 1922give_title b_coracera

Cantabria duchy

give_title d_cantabria

Asturias de Santillana county
give_title c_asturias_de_santillana
- Santillana · province 1801give_title b_santiallana
- Santander · province 1802give_title b_santander
- Reinosa · province 1815give_title b_reinosa
- Medina de Pomar · province 1812give_title b_medinadepomar
Amaya county
give_title c_amaya
- Amaya · province 1814give_title b_amaya
- Miranda de Ebro · province 1813give_title b_mirandadeebro
- Sedano · province 1904give_title b_sedano

Source: game/common/landed_titles/00_landed_titles.txt and the English localisation, Crusader Kings III 1.20.0.3. Commands as listed on the official wiki's console page. See also title IDs, character IDs, dynasty IDs and nicknames.