I am a descendant of Julia Emma (Abbott) Lockhart as well and have been researching the Lockhart line thru her husband James.They were married May 20, 1851 (from Perry County Records -- 1839-1851 -- License #2259 -- License Issued May 17, 1851)
I have a photograph of Julia's grave marker located in the "New" Cemetery of Montgomery Texas.It states "Our Mother Julia Emma Lockhart Born May 5, 1831.Died May 10, 1900Aged 69 Yrs 5 Days--Rest mother, rest, in quiet sleep.While friends in sorrow o'er thee weep".
They had seven children, one of whom, William, is my great grandfather.
I really don't have a lot of other info on Julia other than her descendants but am happy to see her middle name Emma, as I was uncertain of it.
Do you know if James & Julia went back to Ireland for a time after their marriage, as my grandmother had told me that her father, William, was born in Ireland, along with 2 other brothers, Jim & Edward.