Dave, I do not believe that the Jacob and Anna Long buried in Brown Cemetery, Elkhart Co., Indiana are any direct relation to the William and John Long that moved to Elkhart Co., in 1865 and I will explain why.
In the 1860 census there are two Jacob and Anna Long couples of interest to us. One is in Lake Twp., Ashland Co., Ohio on 4 July 1860 and the other in Benton, Elkhart Co., Indiana on 8 August. The Jacob Long in Ohio is already aged 75 and his wife is 69. They live adjacent to John and Louisa Long, who later moved to Elkhart Co, as proven by the names of their children in the 1870 census. The Indiana Jacob Long and his wife are only 67, which match the tombstones in Brown Cemetery, Jacob being 67 years, 10 months and 25 days old at his death on 11 Dec 1861 according to his tombstone. Furthermore they are living with 12 year-old Margaret A. Long. I cannot find any Margaret Long of the nearly the proper age in “my” Longs so she’s not a grandchild or a relative of some sort. While I’ve seen many a minor discrepancy in individual’s ages in various censuses, the 8 years between the two Jacobs is a bit much to believe, while the two years between Annas is quite common.
Unfortunately I cannot find any of the four of these people in the 1870 census in Indiana or Ohio, which likely would have greatly helped to resolve the situation
I cannot imagine that the Ohio couple, retired farmers, would up and move to Indiana before their sons, John and William, did in 1865. It might be that these two men are cousins somehow, but I do not know how. I also cannot imagine that they’d have dug up and moved Jacob’s body from Ohio to Indiana after it had been in the ground of over three years. But I would ask, what evidence do we have that the Ohio couple did accompany their sons to Indiana at all? I think that we can rule out a move in between the dates of the two censuses on the basis of Jacob’s age and the mysterious Margaret A. Long residing with the Indiana couple.
Because of the coincidence of birthdates I agree that the Indiana Anna Long is indeed Anna Masden. I can only suppose that the Ohio Anna Long has some other variant of Sasden as her maiden name. Or that perhaps she hails from another branch of the Masdens? I don’t have a good enough record of the collateral branches of the Masdens to say one way or another.
But since this is drifting more onto the Longs than the Masdens, perhaps we should move this off-line as I’d love to exchange data on Jacob Long’s family with you.