There was Caterina Sforza, who personally took Castel Sant’Angelo in Rome and held up a Vatican conclave.
https://en.wikipedia.org/wiki/Caterina_Sforza
To be fair she might not have been wearing armor at the time on account of being seven months pregnant when taking the fortress.
Here’s an index of European noble houses, which includes knights alongside other members of the nobility.
https://en.wikipedia.org/wiki/Category:European_noble_families
Are you really doing the “oh, so you like Beyblade? Name every character from the animated series” kind of knowledge quiz? Come on, bud. I know you can be better than that.