Paris, 1831: the coat and the name
She arrived in Paris in January 1831, twenty-six years old, sharing rooms and money with Jules Sandeau, a law student from her part of the country who was also trying to write. She wrote for Le Figaro, then a small satirical daily, under its editor Henri de Latouche, and turned out the sketches and reviews that were the entry-level work of Paris journalism. She was poor in a way that mattered: a fashionable dress cost more than she had, and it wore out on the pavement in a week.
So she bought a man's outfit — a long grey overcoat of the kind students wore, trousers, waistcoat, a hat and boots with iron-tipped heels — and described the boots afterwards with real joy, because in them she could go anywhere in any weather. She could also go where the clothes let her go. The cheap standing pits of the Paris theatres were effectively closed to respectable women; so were cafés, and the streets after dark, unescorted. Dressed as a young man she went to all of them, and reviewed what she saw. Paris municipal law had in fact required women to apply to the police for permission to dress as men since 1800, a rule aimed at working women; the permits existed, the ordinance was largely unenforced against the well-connected, and Sand's costume was an open secret rather than a disguise.
The name came out of the journalism. She and Jules Sandeau published a novel together, Rose et Blanche, in 1831 under the joint signature "J. Sand". When she wrote the next one alone, Latouche's advice was to keep the surname the public now knew and change the rest — so "J. Sand" became "G. Sand", and then George Sand, spelled the English way without the final s. The novel was Indiana, published in 1832: the story of a young Creole wife — a Frenchwoman born in the colonies — suffocating in a marriage to a much older man. It sold, it was argued about, and it settled the question of whether she could earn a living.
The trousers and the pseudonym have followed her ever since, usually as an anecdote about eccentricity. They were closer to professional equipment. A woman who intended to report on Paris needed to get into Paris, and to sign work that would be read on its merits before anybody knew who wrote it.