May (hobbit)
From Tolkien Gateway
One of four children of Hobson. Her father was also known as Roper Gamgee, but May lived at a time when the family name 'Gamgee' was still evolving, and it is unclear whether she should properly be called 'May Gamgee' or not.
May was the younger sister of Hamfast Gamgee, and was thus Sam Gamgee's aunt. She is not to be confused with her niece, Sam's elder sister, who was also named May. Given the preponderance of flower-names in her family, it seems reasonable to guess that her name came ultimately from the Mayflower, rather than the month of the same name.