The 63-year-old is routinely described as a bachelor and is thought to have lived alone in his adult life having come through the ranks of a grassroots Hindu nationalist organisation in which celibacy is expected.
Media reports have described how he walked away from a marriage arranged by his parents when he was a child, but this has never been confirmed by the man himself who has portrayed his single status as a virtue while campaigning.
In an affidavit on Wednesday as he filed his papers to stand as a member of parliament from the Vadadora constituency in western Gujarat state, he acknowledged that he had a wife.
In the column of the affidavit to mention spouses, the chief minister of Gujarat wrote the name "Jashodaben", but he states elsewhere in the filing that he had "no information" about her.
Reports have consistently stated that he was betrothed to a 62-year-old now-retired school teacher called Jashodaben, who gave an interview in February in which she said she didn't "feel ba