Nielsen Hayden genealogy
John Derr
- 1785-
Name John Derr Gender Male Death Between 20 May 1784 and 30 Apr 1785 Frederick County, Maryland 
[1] Alternate death 1785 Frederick County, Maryland [2] Person ID I31248 Ancestry of PNH, TNH, and others Last Modified 27 Nov 2020
Children + 1. Philip Derr, b. 25 Feb 1750, Frederick, Frederick, Maryland d. 3 Feb 1821, Middletown, Frederick, Maryland (Age 70 years)Family ID F18548 Group Sheet | Family Chart Last Modified 23 Nov 2020
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Notes - Or Darr.
Roy H. Wampler (citation details below) notes that according to family tradition, the Derrs lived in Pennsylvania before settling in Maryland, and says that there is "a considerable body of evidence indicating that the father of Philip Derr was very likely a John Derr who died in Washington County, Maryland in 1785." This John Derr purchased several lots in Sharpsburg, Washington County on 15 Mar 1779, and one of the associated deeds calls him "John Darr of Lancaster County in the State of Pennsylvania." Furthermore, among the six children mentioned in this John Derr's will is a son named Philip, who he appointed one of his executors.
- Or Darr.
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Sources - [S5077] The Derr Family 1750-1986, with Allied Families of Baker, Flook, Hoover, Koogle, Long, Metzger, Smith, Templing, Toms, Yaste, and Youtsey by Roy H. Wampler. Baltimore: Gateway Press, 1987.
- [S5007] Monocacy and Catoctin: Some Early settlers of Frederick and Carroll County, Md., and Adams County, Pa.; Also Descendants c. 1725-1985 ed. C. E. Schildknecht and Folger McKinsey. Volume 3. Westminster, Maryland: Family Line Publications, 1989.
- [S5077] The Derr Family 1750-1986, with Allied Families of Baker, Flook, Hoover, Koogle, Long, Metzger, Smith, Templing, Toms, Yaste, and Youtsey by Roy H. Wampler. Baltimore: Gateway Press, 1987.