Classify red-haired Italian siblings (surname Gaiotto) from Lombardy (northern Italy)

[jobodwannaa]

They're from Brianza but their surname is Venetian. Where can they pass?

Brother:

https://i.imgur.com/JNFaiP6.png
https://i.imgur.com/Ptr934E.png
https://i.imgur.com/koJ99Fe.png
https://i.imgur.com/mYlGKXb.png
https://i.imgur.com/Zb8EJhz.png

Sister:

https://i.imgur.com/DCu6DYt.png
https://i.imgur.com/txhjzuw.png
https://i.imgur.com/vQTtLsc.png
https://i.imgur.com/u3OyIQ1.png
https://i.imgur.com/JUUmBki.png

Together:

https://i.imgur.com/B44pxU4.png
https://i.imgur.com/TSi8a4z.png

[frdfgcg]

Can pass in Ireland.

[Odin]

Brother: Noric + Brünn. Pass in Central Europe.
Sister: Atlantid. Pass in Western Europe.

[me99]

Brother:North Atlantid/CM
Sister:Subnordid