Mary was the daughter of John Gardner who had moved to Nantucket at the offer of some land. She was born in Salem in 1670. The Nantucket Historical Association has a painting of Mary (see Search Collections) that was done in 1717 by the Pollard Limner (see Timeline).
In 1686, Mary married Jethro Coffin (example descendants list). Also, their house is the 'oldest house' on Nantucket.
There is a painting at the NHA that shows Mary, as a young woman, running from an Indian. It will be interesting to find the story behind this painting.
06/02/2012 -- Search results expired so brought in the image.
03/28/2012 -- Mark E. Miner's site has an interesting look at the Coffin/Gardner conflict that was related to full, versus half, ownership.
12/18/2011 -- Cotton Mather described John Gardner as being well acquainted with the Indians. Nantucket Town provides an interesting story about the Coffin and Gardner families and about the feud that went on between the family heads. The marriage of Mary and Jethro helped to settle, it is said, the controversies (as did the demise of the older guys). Her uncle, Richard, is said to have been of considerable education. John and Richard were both Magistrates, several times. Too, they performed many roles within the community.
12/18/2011 -- Added snapshot of the nha.org page with Mary's portrait. The site has over 600 images related to the Gardner family, including historical photos.