Charles,
Congratulations to your family on acquiring this great heirloom. It's a tangible connection to your ancestors. Below is what I have in my files regarding gunsmith Henry Doebler. Hope you find the information of interest. Thank you for posting photos of your rifle. Very nice example of the style of rifles made in Union/Snyder County area.
Mark Loudenslager
John “Henry” Doebler (or Deobler)
Born: December 5, 1809 Mifflinburg, Union County, Pennsylvania
Died: May 15, 1892 New Berlin, Union County, Pennsylvania
Buried: May 18, 1892 Union Cemetery, New Berlin, Union County, Pennsylvania
John “Henry” Doebler was the son of Henry Anthony Doebler born March 15, 1785 in Stouchburg, Berks County, Pennsylvania, and Catharina Lebkicher Doebler, born November 11, 1791. Catharina was the daughter of Michael Lebkicher, born March 19, 1759 in Berks County, Pennsylvania. John Henry Doebler married Mary Amelia Starr (1813-1880). He died in 1892 in New Berlin, Pennsylvania. Henry Doebler is listed in the Union County tax records as a gunsmith in Mifflinburg in 1832, 1835, and in New Berlin Borough in 1838 to 1860. Henry Doebler is known to have signed his rifles “H.D.” on the top flat of the barrel. A nice rifle attributed to Henry Doebler is on display at the Lycoming County Historical Society in Williamsport, Pennsylvania.
1850 Federal Census, Pennsylvania, Union County, New Berlin Borough
Henry Doebler, age 40 “Gunsmith”; Amelia, age 36; Catherina, age 12; Mary, age 10; Sarah A., age 8; Michael, age 6; Lorrisa, age 4; Jacob W., age 2; Jane, age 4 months.
1860 Federal Census, PA, Union Co., New Berlin Borough, New Berlin P.O., p. 14
Henry Doebler, age 53, occupation “Gunsmith”, b. PA; Amelia, age 46; Louisa, age 14; Jacob, age 11; Amelia S., age 9; Henry, age 7; George W., age 5.
1870 Federal Census, Pennsylvania, Union Co., New Berlin Borough, New Berlin P.O.
Henry Dabler, age 60, occupation “Farm Laborer”, b. PA; Amelia, age 57, b. PA; George W., age 15, b. PA.
1880 Federal Census, Pennsylvania, Union Co., New Berlin, District 164, p. 10
Henry Deobler, age 70, occupation “Gunsmith”, b. PA; Amelia, age 66, “Wife”, b. PA; Amelia J., “Daughter”, age 29.