Origin of Ginnie Mae
1970–75; formed from the initials GNMA; cf. Fannie Mae
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
1970, fleshed out in the form of a fem. proper name, from GNMA, acronym of Government National Mortgage Association.
Online Etymology Dictionary, © 2010 Douglas Harper