NameAnna Margaretha Heckman 
Spouses
Birthabout 1746, Longswamp Twp, Berks Co, PA
Marriage24 February 1765
Marr Memoby Rev Johann Andrew Krug
Parent-Proof notes for Anna Margaretha Heckman
“Conrad Mertz, 2nd son of Nickel of Longswamp to Anna Margareth Heckman, oldest d/o Peter of Ruscombmanor Twp, Feb 24, 1765”
Birth, Parent-Proof, Designation notes for Conrad (Spouse 1)
We know Conrad as the son of Nicholas from his mention in the various petitions filed after Nicholas’ death. He is designated N3.
On 29 Jan 1760, Conrad Mertz and Elizabeth Hammerig sponsored the baptism of Conrad Mertz son of Jacob and Magdalena. I am certain the sponsor was this Conrad born approximately 1746 standing up for his brother John Jacob. Elizabeth, the other sponsor, might well have been Magdalena's sister, the basis for the theory that Magdalena may have been maiden name Hammerig — or Emmerich. Sometimes baptismal records like this provide a clue to a future marriage of the sponsors, but in this case, that is not who Conrad married.
I firmly believe that Conrad did not move to Northumberland County with his brother and cousins. The Conrad who did appear there and then moved to NY State I believe was his nephew, the Conrad born in 1760.
Relocated and Census Tracking notes for Conrad (Spouse 1)
It’s hard to find Conrad in early Census and know it is him and be sure it is not any of the other two Berks County Conrad Mertz I know about — N1a, this Conrad’s nephew, and Y2 of the Mertz Church Mertz family, both of those other two born in 1760.
Conrad Mortz was listed in Bern Township in the 1779 Pennsylvania Septennial Census, this one I would think the only one old enough to be listed.
1790. By process of elimination this Conrad, N3, must be the one in Windsor Township, Berks County. Conrad Y2 is in Rockland, Conrad N1a in Northumberland.
1800. By process of elimination this Conrad, N2, must be the one in Berks County, no township stated. Conrad Y2 had sold his Rockland land and moved to Macungie Township where he will die in 1822, Conrad N1a was in NY State. Note however that Conrad in Berks County had no family living with him, that makes no sense whatsoever.
1810. Conrad N1a was still in NY State but there were two Conrads in Northampton County, one in Macungie Township and one in nearby Upper Milford. The tick marks all fit that the one in Macungie was Conrad Y2 (although I must point out when he died he also owned a little land in Upper Milford in addition to his main holdings in Macungie.)
So who was the Conrad in Upper Milford? He was said to be only 26-45 which is not right for any of the Conrads I know but actually the tick marks for several younger males present may help explain who several males I can’t other wise place might be: Samuel born about 1794 and David born about 1795. Conrad in Upper Milford has two sons age 10-5.
In any event, by 1820, I think this Conrad, N3, has certainly died, Conrad Y2 is in Macungie where he will die in 1822 and Conrad, N1a, has moved to Ohio.