Thank you so much for posting the will.I am sure I am not the only one who appreciates this.
I am not sure that I can really help.My suggestions would be to check the various spellings in the census.I have found Murdock indexed Mardock, Merdock, Mordock, etc, and when I go to look at the actual census, it will look like Murdock to me.Another suggestion is if you have a middle name or initial to look under that as well as what you have for a first name.
The ages given on the census are not always correct.I suspect it is because sometimes they ask for the age on January 1st, sometimes it is later in the year and sometimes it is when the census taker actually interviews the person for the census.The place of birth is not always right either.Sometimes the census taker gets carried away with the dittos and sometimes I think they just assume the person is born in the state that the census taker is working.
Of course, the census indices are not always an every name index, so if your James was living with someone, it could be that he is not indexed.
What were the names of the children of your gg grandparents?Since your gg grandfather was supposed to be from Scotland, it is quite possible he used the Scottish naming pattern for his children.The first son is named after the father's father, the second after the mother's father, the third after the father.The first daughter is named after the mother's mother, the second after the father's mother, and the third after the mother.
I am certain you have seen the 1850 census for the James born in 1846 of whom you write, but I will post my transcription just in case.
1850 Census - United States, State of Ohio, Logan County, Bokes Creek Township, Pages 22b and 23 enumerated by:Jeremiah Kelly, August 23, 1850
Page 22bLine 39294294 James Murdock55MFarmer1000Virginia Elizabeth29FOhio Katherine Collins12FOhio Milton Linus?9MOhio
Page 23 (family continued from previous page) Line 1 George Collins10MOhio Abner Collins8MOhio James Murdock4MOhio Minerva Murdock9/12FOhio (The age is difficult to read)
The last name for the Katherine named in your copy of the will should be Collins based on this census.If you would like to send me a copy of the will, I would be glad to try my hand at transcribing it to fill in the blanks for you.
What I have transcribed as Minerva in the 1850 census is obviously what someone else transcribed as Moriessa in previous posts.
I have no proof, but from looking at the different censuses, I have deduced that A. A. Murdock is Addison Aaron Murdock and he uses Addison in one census and Aaron in others.
I doubt that any of this helps you, but I will keep a look out for your James when I am doing my research.I seem to go off on tangents since I have hit a brick wall.