Judy Mappin (née Judith Winifred Taylor) was born on October 3, 1928, in Toronto, Ontario. She was the daughter of businessman E. P. Taylor (1901-1989), and she was a trustee of the Charles Taylor Prize for Canadian non-fiction literature, named after her late brother Charles.

She was a Canadian businesswoman and philanthropist. She graduated from McGill University (B.Sc.) and settled in Montreal. From 1974 to 2005, Mappin operated the Double Hook bookstore in Westmount, Montreal, which sold only Canadian books. In 1995, she became the first winner of the Quebec Writers' Federation Award for promoting generations of Canadian writers in her long career as a bookseller. She also served on the jury for the 1999 Giller Prize for Canadian fiction. She founded scholarship programs at McGill University (one in 2000 for undergraduate environmental studies and another in 2002 for graduate students in women's health studies). In 2006, she received an honorary doctorate from McGill. In 2008, she was appointed a Member of the Order of Canada. Judy Mappin Community Award, given to a member of the extended literary community who has made a significant and longstanding contribution to the development and/or dissemination of English-language literature in Quebec, is named after her.

She married John Newton Mappin (1926-2008). She died on February 14, 2014, in Montreal, Quebec.

Antiquarian book dealer, author, publisher, and reviewer, John Newton Mappin was born in Montreal, Quebec, Canada in 1926 and died there in 2008. Mappin lived in Montreal with his wife Judith (Judy) Taylor, who had co-founded The Double Hook, a Canadiana bookshop, while she was a student at McGill University. John Mappin took over the family jewelry business, Mappin & Webb Limited, after his father’s death. He sold the business in 1962 and entered the book trade business shortly thereafter. Mappin graduated with a Master of Arts in political science and economics from McGill University in 1968. His thesis was titled The political thought of Francis Maseres, attorney general of Canada, 1766-69.

For over 40 years, Mappin himself was a collector and dealer of antiquarian books in Montreal, as John N. Mappin Rare Books. He operated out of his home office and as thus never had a brick and mortar store, nor did he participate in book fairs. He issued book lists and met privately with his customers, many of which were libraries building their Canadiana collections.

As an author, Mappin is most known for his book Bernard Amtmann 1907-1979: a personal memoir, which has been cited multiple times in scholarly literature. Antmann was a fellow Canadian antiquarian bookseller from Montreal.