Hi.My ancestor was also named Joseph (Jackson) Alexander.He was born Dec. 1830 in Bedford Co., TN and later moved to MO. (His father's name was Joseph too.) When searching for his records I came across this census which didn't fit my family, but apparently fits yours:
1870 Christian Co, Missouri - Marion Twp. Fam #63 Alexander, Joseph 32 m TN Sarah E. 31 f TN Syntha 10 f AR Richard 8 m AR William 5 m AR Nancy B. 3f AR
It appears your family lived in Christian Co. in 1870.May I ask, who is the father of your Joseph?I've always wondered if this family is any way related to mine.