Thank you everyone for all this expert help. I am not familiar with military personnel and records. You are right ShaunJ, he is not on the 1871 census with his wife Ann and daughter Ellen although Ann says married whereas in 1881 she says widow.
Kloumann, I wonder if it could be our James who enlisted in Co. Down in 1860. Age is right but there are a million James Wattersons. thanks for sending this.
I believe Leonard and Jane McLernon who married 1830 in Ireland are the same couple as Leonard and Jane McLaren in Scotland. It all fits. They apparently had a daughter Mary in Ireland in 1830 but I don't find Mary ever again.She is not on the 1841 census. And yes they did have a son John abt 1833 as per the 1841 census and John died in 1897 as per my research. I wonder if William born abt 1841 and died before 1851 is the same son as Edward who died in Glasgow in 1846 age 4.
As for marriages, this is what I have found. Married Jane McLaren 1830 and she died Feb 29, 1856. Leonard is on the 1841 census in Gorbals with wife Jean, John, age 8, David age 4, James 2 and William age 1 mo. Leonard, cotton weaver, is on the 1851 census with Jane, and sons John age 16, born Ireland, David 13, born Scotland and James age 10 born Scotland. No son William who may be Edward. Leonard, salesman, remarried July 21, 1856 to Jane Beattie who died Sept 19, 1859, her husband salesman. They had sons William in 1857 who died 1887 and Joseph Sept 8, 1859 in Glasgow, 10 days before mother's death, and I have not found Joseph again. Leonard, furniture salesman, remarried to Rachel Watterson Nov 3, 1860 in Ireland. On the 1861 census, Rachel and Leonard have sons Leonard age 8, who must belong to Jane McLaren, and William age 3 who would be the William born 1857 to Jane Beattie. Leonard and Rachel had Mary Ann 1861, her father lemonade salesman, Mary Ann not found again and Richard 1863, can't read father's occupation and Richard died 1878. Rachel died May 4, 1869. I suppose Leonard, weaver, could have whipped back to Ireland and married Jane Blair in Aug 1869 although I did not have her on my list. He doesn't wait long between marriages. Wonder when Jane Blair died. I don't have Leonard on 1871 census in Scotland. When Leonard, cotton weaver, died in 1886 at his son John's, there are three wives listed which are Mary Rae, 1st, Rachel Watterson 2nd and Jane Robertson 3rd. Note that John's own mother Jane McLaren is not listed. I could never find Mary Rae. Don't know anything about Jane Robertson, and wonder about reliability of wives' names but Rachel Watterson is correct.