I am looking for information about Joseph LUSK born abt 1806 in Tennessee.

He is listed in the 1850 Census with a Sarah LUSK (b. abt 1780) who I believe is his mother (maybe??)
Also listed are 3 children:
1. Albert LUSK (b. abt 1836 in TN) - m. Carolina ROLLINS - had two children Joseph Lee and William Albert...this part of the family ended up in Carroll Parish, Louisiana.
2. Sarah Lucinda LUSK (b. abt 1838)
3. Sarah LUSK (b. abt 1840)
Also listed in this census is Elizabeth ROBINSON (b. abt 1806 in South Carolina)

I do not know if Elizabeth R. is the children's mother, and if not, then who she is and who was Joseph's wife.
Also, trying to find information on who Joseph's father was.

From what I have been seeing, it is possible that Joseph is the son of a William LUSK and Sarah GILLIAM. I cannot find any documentation on this though, other than posts on websites without any sources.

Any information on this line would be much appreciated! I will share what I have, as well.
Thanks!
-Elizabeth