Editing List of Spanish monarchs (section)

==House of Trastámara (1479–1516)==
Under Isabella I of Castile and Ferdinand II of Aragon, their royal dynasties were united into a single line. [[Historiography]] of Spain generally treats this as the formation of the Kingdom of Spain, but officially speaking, the two kingdoms continued with their own separate institutions for more than two centuries. It was not until the [[Nueva Planta decrees]] of 1707–1716 that the two lands were formally merged into a single state.

{{Succession table monarch
| name1       = '''[[Isabella I of Castile|Isabella I]]'''
| nickname1   = the Catholic
| native1     = {{langx|es|Isabel I}}
| life1       = {{Birth date|1451|4|22|df=y}} – {{Death date and age|1504|11|26|1451|4|22|df=y}}
| reignstart1 = 11 December 1474 <br/> {{small|''Castile''}}
| reignend1   = 26 November 1504 <br/> {{small|''Castile''}}
| notes1      = Daughter of [[John II of Castile]] and [[Isabella of Portugal, Queen of Castile|Isabella of Portugal]]
| family1     = [[House of Trastámara|Trastámara]]
| image1      = IsabellaofCastile03.jpg
| alt1        = Isabella I of Castile

| name2       = '''[[Ferdinand II of Aragon|Ferdinand V & II]]'''
| nickname2   = the Catholic
| native2     = {{langx|es|Fernando V & II}}
| life2       = {{Birth date|1452|3|10|df=y}} – {{Death date and age|1516|1|23|1452|3|10|df=y}}
| reignstart2 = 15 January 1475 <br/> {{small|''Castile''}} <hr/> 20 January 1479 <br/> {{small|''Aragon''}}
| reignend2   = 26 November 1504 <br/> {{small|''Castile''}} <hr/> 23 January 1516 <br/> {{small|''Aragon''}}
| notes2      = Son of [[John II of Aragon]] and [[Juana Enríquez]]
| family2     = [[House of Trastámara|Trastámara]]
| image2      = Michel Sittow 004.jpg
| alt2        = Ferdinand V of Castile and II of Aragon

| name3       = '''[[Joanna of Castile|Joanna]]'''{{#tag:ref|Joanna was confined from 1509 till her death for alleged insanity.|group="note"}}
| nickname3   = the Mad
| native3     = {{langx|es|Juana I}}
| life3       = {{Birth date|1479|11|6|df=y}} – {{Death date and age|1555|4|12|1479|11|6|df=y}}
| reignstart3 = 26 November 1504 <br/> {{small|''Castile''}} <hr/> 23 January 1516 <br/> {{small|''Aragon''}}
| reignend3   = 12 April 1555
| notes3      = Daughter of [[Isabella I of Castile]] and [[Ferdinand II of Aragon]]
| family3     = [[House of Trastámara|Trastámara]]
| image3      = Juan de Flandes 003.jpg
| alt3        = Joanna of Castile and Aragon (later: Joanna of Spain)

| name4       = '''[[Philip I of Castile|Philip I]]'''
| nickname4   = the Handsome
| native4     = {{langx|es|Felipe I}}
| life4       = {{Birth date|1478|7|22|df=y}} – {{Death date and age|1506|9|25|1478|7|22|df=y}}
| reignstart4 = 27 June 1506 <br/> {{small|''Castile''}} 
| reignend4   = 25 September 1506 <br/> {{small|''Castile''}}
| notes4      = Husband of [[Joanna of Castile]]
| family4     = [[House of Habsburg|Habsburg]]
| image4      = Juan de Flandes 004.jpg
| alt4        = Philip I of Castile
}}