http://www.freedmenscemetery.org/resources/documents/manumissions.shtml
Slave Manumissions in Alexandria Land Records, 1790-1863
2/16/1790 Barbary Ratcliffe (formerly BARBARY HALLEY) of Fairfax Co. , VA and WILLIAM HALLEY of Alexandria Cambridge Cambridge, 36, had been "devised" to BARBARY HALLEY by SAMUEL HALLEY. John Bowen, George Fielder, Rebekah Killgore, ANNA HALLEY Ffx. T-1:540

7/17/1793 William Johnston of Fairfax Co., VA 9 Milly/ £50
Milly was about 21 years old. Her freedom was purchased by WILLIAM HALLEY, the former master of her husband, Nace.
Peter Wise, French Simpson, ESTHER HALLEY, WILLIAM HALLEY, Hust E:473

7/4/1797
WILLIAM HALLEY for Susanna, Andrew
Susanna and Andrew had been purchased from NELSON HALLEY'S estate. They were to go free 1/1/1801.
William Summers, David Henderson, Hust I:184, Hust I:185

7/4/1797
WILLIAM HALLEY for Harry
Harry was property of “Barbary Ratcliffe, deceased,” and at her decease, conveyed to [HALLEY] by will of SAMUEL HALLEY of Fairfax Co., VA.
William Summers, David Henderson, Hust I:186

7/4/1797 WILLIAM HALLEY for Jacob [HALLEY?]
Jacob was former property of NATHANIEL HALLEY. Manumission to take effect 1/1/1798. William Summers, David Henderson, Hust I:187

7/4/1798 WILLIAM HALLEY - Jacob
Jacob was property of “Barbary Ratcliffe, deceased,” and at her decease, conveyed to [HALLEY] by will of SAMUEL HALLEY of Fairfax Co., VA.
William Summers, David Henderson, Hust I:188