NameHannah Bower 
Birth22 December 1820
Memo(find-a-grave)
Death11 April 1893
Memo(find-a-grave)
BurialBower Cemetery, Columbia Co, PA
Spouses
Birth3 June 1817
Memo(find-a-grave)
Death22 February 1887
Memo(find-a-grave)
BurialBower Cemetery, Columbia Co, PA
Parent-Proof notes for Hannah Bower
Her maiden name is given as Bower on find-a-grave. She and her husband were buried in the Bower family cemetery and in 1850, Isaiah Bower age 21, lived with Henry and Hannah. This family was also surrounded by others of the Bower family in that Census.
Birth, Parent-Proof, Designation notes for Henry G (Spouse 1)
I am certain about three of William’s sons — Johannes, Abraham and Daniel.
I am somewhat guessing that Henry was also William’s son based on his age and geographic location. It is, in theory, possible that he was the son of Johannes or Abraham but neither of them had any other children until the 1830’s or so. Henry is designated H1a4.
Relocated and Census Tracking notes for Henry G (Spouse 1)
Henry Mertz lived his life in or near Briar Creek, Columbia County where the rather large family of William Martz (1767-1854) lived.
Death and Find-a-Grave notes for Henry G (Spouse 1)
Henry G Martz is on find-a-grave buried at Bower Cemetery in Columbia County.