Ah! The surname is properly Alvord, not Alvond.No wonder I couldn't find anything more about the family.
I don't know about an 1837 Red River census.I have copies of the 1827,28,29,30,31,32,33,34,35,38,40,43,46,49 and partial 1856 censuses and rather thought I had them all.
I'll list some items you may not have, or differ from what you have:
1) Jane #1 burial date May 28, 1823, died of croup.
2) Elizabeth, baptized Sep 26, 1824.
3) Thomas, not Solomon, baptized April 15, 1827.
4) Jane, baptized Nov. 8, 1829, and no evidence for yet a 3rd Jane born in 1831.
5) James, born Aug. 5, 1831 not 1830, and baptized Sep 18, 1831.
6) Mary, born Sep 15, 1835, but baptism not found
7) Elizabeth, not Elijah, baptized Nov. 19, 1837
All these names and dates are based upon my own examination of baptismal records and quite independent of anyone's compilation or genealogy.However, the children's names as found on the probate are more likely to be correct.
As for censuses, the 1828 census states that he was living on the lot then numbered #818 and was a servant to Robert Logan, one of the most prominent settlers at Red River. The family is missing from the 1830 and 1833 censuses, perhaps being included with Logan's household.The 1834 census is interesting because Thomas Wishart is absent, but his wife and children present.In the 1835 census all are present and accounted for, but this is the last in which any Wisharts are present.
I believe I can find out which lot the Wisharts last lived upon, and who subsequently lived there, but probably not the exact date of transfer.In any case, that stuff might be useful for a family history, but not for a genealogy.
I'm most intrigued by the info that Elijah died in 1859 at Turkey Junction, likely the same general place where he grew up, and well after James and Mary were back at Red River raising families of their own.Assuming that they did go back, and weren't left there, the question is why?Did Thomas still have property in Red River when he died in 1840? Were they perhaps sent back to Red River, shortly after his death, to be raised by one of Barbara Spence's sisters?I can tell you that the family of sister Elizabeth, married to Francois Desmarais, suddenly increased by 4 unknown persons between the censuses of 1838 and 1840. (However, the Red River censuses were all taken in May, probably too early for someone to have travelled from Iowa in time to be included).
One way or another, an interesting family.