My grandmother's name was Mafalda Nicolina Mosca. We are from Brooklyn New York. Growing up everyone would call her “Mafalda”. It will always have a special meaning for me. She lived a long, beautiful life. She was born in 1921 and passed in 2017. We will always miss her.
I think this is an unusual and intriguing version of Matilda, and also sounds better. It's sad this name isn't used more often. Also, I think there's a minor character in Harry Potter called Mafalda Hopkirk. I think she might work for the Ministry of Magic or something, but still, lovely name. :)