Hello! I'm also new here. I would be interested to know the reasons behind your infatuation with Marth? I've never played any games with him besides Super Smash Bros.
Personally my favorite lords are Lyn from FE 7, and Alm from FE Echoes. I like Lyn's simple caring attitude towards friends and family, and her love for nature. She's also the hero of the first FE game I ever played. I also like Alm because of the hardships he must endure during his quest in FE Echoes.