Hi Virginia,
The 1870 census that i have (from the genealogy library), only covers
Marion Co, but i have the 1860 and also there are Modlin's listed on the
1850 census images, i can send you, if you need them. If so, let me know if
you can work with zip files.
Listed in the 1850 census....
Modlin, Alfred IN Henry Henry Township 1850 151 375
Modlin, Elias IN Henry Henry Township 1850 151 376
Modlin, Joab IN Henry New Castle Township 1850 151 366
Modlin, Mark IN Henry Harrison Township 1850 151 348
Modlin, Mark IN Henry Henry Township 1850 151 379
Modlin, Nusby IN Henry Harrison Township 1850 151 355
listed in 1860
Modlin, Amos IN HENRY CO. FRANKLIN TWP 073 1860
Modlin, Eli IN HENRY CO. FRANKLIN TWP 057 1860
Modlin, Elias IN HENRY CO. HARRISON TWP 408 1860
Modlin, Eliza IN HENRY CO. GREENSORO TWP 419 1860
Modlin, Elizabeth IN HENRY CO. HENRY TWP 226 1860
Modlin, Hannah IN HENRY CO. HARRISON TWP 383 1860
Modlin, Hester IN HENRY CO. HENRY TWP 021 1860
Modlin, Jason IN HENRY CO. HARRISON TWP 408 1860
Modlin, Jesse IN HENRY CO. WAYNE TWP 493 1860
Modlin, John IN HENRY CO. HARRISON TWP 409 1860
Modlin, John IN HENRY CO. HENRY TWP 020 1860
Modlin, Joseph IN HENRY CO. HARRISON TWP 391 1860
Modlin, Joseph IN HENRY CO. HARRISON TWP 409 1860
Modlin, Mark IN HENRY CO. HENRY TWP 020 1860
Modlin, Mary IN HENRY CO. FALL CREEK TWP 340 1860
Modlin, Micajah IN HENRY CO. DUDLEY TWP 078 1860
Modlin, Nathan IN HENRY CO. DUDLEY TWP 086 1860
Modlin, Newby IN HENRY CO. GREENSORO TWP 419 1860
Modlin, Olvier IN HENRY CO. FALL CREEK TWP 340 1860
Modlin, Richard IN HENRY CO. JEFFERSON TWP 308 1860
Modlin, William IN HENRY CO. HARRISON TWP 408 1860
Hope these help!
Kelly