Sorry to be slow in answering.I was out of town for the holidays.The info I have on Joseph was that he was born 1776 (?) in Mecklenburg, NC and died 1851 in Greene Cty., AL.They had the following children:
Wallace Alexander born 1801 in NC Elizabeth Steele Alexander born in NC; died June 7, 1840 in Greene Cty., AL Catherine S. Alexander born 1810 in NC; died 1858 in Greene Cty., AL May S. Alexander.She married Unknown Robertson. Jenny Alexander, died in Alexander Co., NC & is buried in Marvin Methodist Church Cemebery, Alexander Co., NC Jane Chambers Alexander, born in Alexander Co., NC.Married John S. White. Ann Mazilla Alexander, born in Alabama, She married Benjamin H. Lamb Jan. 21, 1833 in Greene Cty., AL.
I haven't done much on my research in several years but according to the info I have, Anna Nancy Steele must have died prior to Oct. 1818 as Joseph married Nancy Speaks on Oct. 14, 1818.That would mean that at least Ann Mazilla Alexander would have been from his second marriage.Wallace Alexander was my GGreat Grandfather.
I hope to get back into my research again soon.If there is anything else I can help you with, please feel free to let me know.