Eleanor M Maclay was the daughter of the first Pennsylvania Senator, William Maclay and "Mary McClure Harris." She was born and died in Harrisburg, PA. Her mother was the daughter of John Harris of Harris Ferry and the founder of Harrisburg, Pennsylvania. Rev. Nathaniel Snowden, married her to William Wallace, the son of Benjamin Wallace and Elizabeth Culbertson in about 1806.

They had Wallace children:
Mary Elizabeth, 7 May 1807 (Rev. Wm R DeWitt), below
William Maclay, 15 Aug 1808 - 26 Jun 1877, below
Benjamin John, 10 Jun 1810 (Sarah Cochran), below
Irwin Maclay, 10 Oct 1809 or 1813 (Elizabeth Reid), below

The History of the Sesqui-Centennial of Paxtang Church, September 18, 1890 by Mathias Wilson McAlarney, Harrisburg Pub. Co.. 1890, lists the following on her marker. The Paxton Church Churchyard data spreadsheet confirms burial HERE (not at Paxtang) and has a plot #.

ELEANOR M. WALLACE
Daughter of William Maclay
and wife of William Wallace,
Died January 2d 1823,
Aged XLIX.
Her children place
Over the grave of their Mother
this memorial
Of affection and gratitude,
that to their welfare
was consecrated
a mind of rare power
Animated by strong feelings
ennobled by culture
and softened by Religion.
"He giveth his beloved sleep."
Psa. cxxvii :2.

A different version is found in Pennsylvania Genealogies: Scotch-Irish and German, by William Henry Egle, p 36 says: Mr. (Samuel ) Awl (5 Mar 1773 - 1 Jul 1842) married Mary Maclay (19 Mar 1776 at Harris' Ferry - 13 Aug 1823) on 27 Apr 1795, the daughter of Hon. William Maclay and Mary McClure Harris.

They had Awl children:
William Maclay, 24 May 1799 - 19 Nov 1876 in Columbus, OH
Mary Harris, 1 Sep 1802 - 29 Nov 1870 (Wm C Gearhart)
Charles Maclay, 5 Jan 1804
Eleanor Maclay, 22 Nov 1806 (Ezra Grosman)
Charles Samuel, 1 Aug 1808
George Washington, 27 Jul 1810
Sarah Irwin, 1 Jun 1812 (Geo C Welker)
Hester Hall, 16 Aug 1814 (Wm Brindel)
Elizabeth Jane, 28 Nov 1816 (Danuel Rohrbach)
Robert Harris, 27 Dec 1819 (Eliza Bower & Rebecca Pursel)

In the same source, p 359 in the hand writing of Wm Maclay, says "Eleanor Maclay was born the seventeenth of Jany Anno Dom: one thousand seven hundred & seventy Four - at Fort Augusta." It includes her other siblings as well. Page 360 says: Eleanor, born January 17, 1774; married William Wallace. Page 366-377 includes more data on Eleanor Maclay (see copy).

Note: Also J M Runk & Company's Commemorative Biographical Encyclopedia of Dauphin County, Containing Sketches of Representative Citizens..., 1896, p 193 adds that William and Eleanor were "buried in Paxtang church graveyard" but you won't find markers there. They are both at PAXTON Cemetery with markers, formerly the OLD Paxtang Meeting House Cemetery instead.

Bio by LSP