Jacob was mentioned in his father’s will as a younger son. His two older brothers were tick marks in the 1790 Census but Jacob was not yet born. He is designated T3c.

Like his brothers, I cannot find any member of this family in 1820.

Jacob first appeared in Census in 1830 in Washington County, MD and was also there in 1840 but then was listed in 1850 (and 1860) in Frederick, MD. This family seemed to move back and forth.

I believe his age was mis-reported — by about 10 years — in the 1850 Census.

Jacob Martz Sr. is on find-a-grave. His wife is linked to him and they are linked to twelve children. Curiously, his name is given as Jacob Daniel Martz, Sr. on find-a-grave. I’ve never seen that middle name for him any place else. There is a photo of his tombstone on find-a-grave but it is not readable. Jacob named his oldest son Jacob (and he is listed as Jacob Mertz, Jr. on find-a-grave) and his next son Daniel.

I also find it curious that when I last researched this family in 2016, I made no note of his find-a-grave name being Jacob Daniel, so I sort of think it has been added to his memorial since then and it may have been added in error.

His wife was Elizabeth Durnbaugh, according to her find-a-grave memorial.