Specific records currently unfound are these:
Luhrt, Henry - between 1852-1860 - Death (father - age 62-70)
Louis/Luhrt, John/George and Cords, Dorothea - 10/1/1854 - Marriage (husband/wife)
Louis/Luhrt, Theodore 8/12/1855 - Birth/Baptism (child)
Lurth/Luhrt, Johanna - 1856 - Birth/Baptism (niece)
Louis/Luhrt, Frederick - 1858 - Birth/Baptism (child)
Louis/Luhrt, Mary - 8/24/1860 - Birth/Baptism (child)
Louis/Luhrt, Frederick - 1862 - Death (child)
Louis/Luhrt, George - 1/22/1863 - Birth/Baptism (child)
Schwartzkop, Frederick and Luhrt, Dorothea (sister) - 1852-1880 - Marriage
No NY obituaries have been found (unlikely that there are any for recent immigrants in this era). No records of burials have been found other than for Dorothea Luhrt Schwartzkop.
Records that have been found:
3/3/1833 Baptism - Mestlin, Mecklenburg - Dorothea Cords (wife)
11/10/1834 Baptism - Rederank, Mecklenburg - John Luhrt (husband)
2/15/1853 Immigration - NYC - Henry and Johann Luhrt (father and husband)
11/28/1853 Immigration - NYC - Dorothea Cords (wife)
10/4/1856 Declaration of Intent - Erie Co - George Luhrt
1860 Census - Lancaster - George Lower and family
10/24/1860 Naturalization - Erie Co - George Luhrt
7/1/1863 Civil War Draft Registration - Alden - George Luart
8/11/1864 Enlistment - 52nd NY Infantry - Alden - George Lord
1899 Burial of Dorothea Schwartzkop at Town Line Lutheran Cemetery - Alden (sister)
George Lord, George Luhrt, John Louis and all similar combinations refer to the same person.
The Louis/Luhrt family left the area to resettle in Ottawa Co., Ohio in 1865, so no records after that date are expected. The Schwartzkop family remained in the area through 1899, when widower Frederick departed the area. The Schwartzkops had no children.