None of the pet names you mentioned (Aggie, Agnes, Neszka, Agneta) would be acceptable in Poland. The reason is that Agnieszka already sounds like a pet form. Perhaps Aga would be OK.
Agnieszka Pacha³ko is the second winner of the Miss International pageant from Poland in 1993, when it was held in Tokyo, Japan. The first winner was also named Agnieszka.
-- Anonymous User 8/5/2007
Agnieszka Roma Radwañska is a Polish tennis player.
Agnieszka Lipska Baranowska was a Polish playwright and poet. Most of her works were dedicated to rekindling the patriotic spirit of Poles, and used many elements from myths and legends of Greater Poland.
Agnieszka Perepeczko is an actress, best known for her performances after her emigration to Australia. She performed in the television series Prisoner.
Agnieszka Graff is a Polish writer, translator, publicist, feminist and women's and human rights activist. She may be best known for her book World Without Women.
-- Anonymous User 8/5/2007
Agnieszka Wojtowicz-Vosloo is a filmmaker and writer. Her debut short film Pâté premiered at the Sundance Film Festival and went on to win several prestigious awards.
-- Anonymous User 8/5/2007
I actually think this name sounds tremendously cute. I don't know how Poles feel about this, but to me, a Finn, it sounds quite youthful, like an adorable name for a girl, but a bit cutesy for a woman.