There are a lot of Indians, especially in the south , with the surname
of "Raghuvamshi". But there is a popular and powerful community in
gujarath that goes by the surname "Raghuvanshi" (Please note the
difference in the 8th character, one is m and the other is n).

Is there any literature on the ancestral lineages or any kind of
literature of the first ? (Raghuvamshi) ?