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People change names.....or sometimes their followers give saints the name that has special meaning in the local dialect....Maybe ask a Keralite...
Also...Not sure why you're so surprised....You guys still have names that represent your Indian/Hindu past lineages such as Rana.....
IF he was given a hindu name by locals then well could be but its not common that a Muslim saint will adopt a hindu name.
as far as having titles like Rana, and so on well these are not names just titles to identify their tribe
If you dont, then why the hue and cry about Babri Masjid?
Because that was historical mosque which has been grabbed by hindus

is a family name, originally a Hindu ancestry now found in all religions such as Islam, Sikhism, Buddhism etc. Rana is a surname used by the Gurjars, Rajputs and a very few Jatts of India, Pakistan and Nepal. Most of the Ranas reside in Northern states like Rajasthan, Haryana, Himachal Pradesh and Punjab.
she is an actress saints are not