George Galphin made a deed of Trust on the 2nd day of Feb 1775 to the trustees named as Locklin McGillvery, John Parkinson, John Graham, Alexander Wyly, George Galphin the younger, and Thomas Galphin in consideration of the love and affection which he hath and beareth unto John son of "Matorney" a Creek Indian woman which also noted In trust for his the said John brother and sister George and Judith, and also Thomas & Martha son and daughter of Rachael Dupee to be shared in manner following: That is to say, the lands to fall to the above named George and Thomas and their heirs forever, also the said cattle horses mares and colts with the future issue and increase of the females thereof, to be shared equally share & share alike. This document proves George Galphin's children by Rachel Dupree were Thomas and Martha. On the 6th of April 1776, George Galphin wrote his Last Will and Testament. He left to Martha Galphin, daughter of Rachel Dupee, 500 acres of land above Augusta, in Georgia. Also cattle, etc. at Ogechee. 
Martha Galphin married John Milledge about 1786.
On the 7th day of June 1800 John Milledge of the County of Chatham, Planter, and Martha his wife sold 220 acres in Chatham County known by the name of Pembroke bounding on Milledge Galphins' land.
A Supreme Court case, Milligan v. Milledge, 7 U.S. 220 (1805), recorded that Martha was the daughter of George Galphin, the elder. Among other things it was noted:
She passed away in 1811. According to her obituary in The Republican and Savannah Evening Ledger, Died, on Tuesday the 5th inst. at the Sand-Hills, Mrs. Martha Milledge, consort of J. Milledge, Esq. in the 47th year of her age. 
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