Not sure if you'll get this message my name is Terry and Joseph Dellinger was my third grade grandfather your fourth grade uncle I'm also researching the family history I'm sure you've already found out Augustine Austin Dillinger was also fourth great-uncle he served in the 136 and then transferred to the 18th and then the 23rd Calvary Confederate Army. in the 1850s their brother Joseph my third great-grandfather move to Indiana and served in the 58th Indiana his son Thomas name for your third grade grandfather served in the 13th Indiana cavalry. His little brother John Henry my second great-grandfather served in the 51st Indiana Infantry. just like they say in the history books brother against brother. Good luck with your research cousin