Actually, Mata Sita is self born. King Janak was not her biological father. Maa Sita took birth through Bhu Devi. Yes.. You can get confused.. Maa Sita is actually self born because Bhumi Devi is not different from Maa Sita. But yeah King Janak adopted her. About Mata Sita's husband, I don't need to give the introduction. Her husband’s name is most auspicious name- Ram. Shri Ram is Vishnu, Maa Sita is Lakshmi herself and Bhagwan Ram is Narayan himself. So Siya Ram= Lakshmi Narayan.
Jai Siya Ram 🙏
Jai Sri Lakshmi Narayan 🙏