Wikipedia:Articles for deletion/Ada of Holland
She has http://resources.huygens.knaw.nl/retroboeken/nnbw/#source=2&page=10&view=imagePane an entry (though admittedly not a very long one) in the ''Nieuw Nederlandsch Biografisch Woordenboek'' and therefore meets 
— User:Opera, 14:27, 25 July 2021 (UTC)
Stance: keep
Cited policy: WP:ANYBIO (Wikipedia:Notability)