Just to clarify - if the second child is NOT listed on the parent's naturalization application, will the unlisted child still be able to claim Spanish nationality? I read about various cases where this was a problem. They are described in detail in the "BoletÃ*n del Ministerio de Justicia" on "resoluciones de la Dirección General de los Registros y del Notariado".

https://www.mjusticia.gob.es/cs/Sate...ResolucionDGRN

See page 130, paragraph 7 from the example link below. There are many similar cases. You can search previous boletÃ*nes with the phrase "al solicitar la nacionalidad española por residencia, el progenitor no mencionó al
optante como hijo sujeto a su patria potestad".

https://www.mjusticia.gob.es/cs/Sate...=1288811959625