Anne (Amis) Smith - Parents

I'm wading through this detailed and lengthy work on the Amis family and discovered that Ann had brothers names Joseph who married Constance Jones and Thomas who married Rachel Daniel. There are a LOT of references to Ann's husband Samuel Smith. However, I can't make sense of who the father of Ann, Joseph and Thomas are. I hope I'm just overlooking the info and that maybe additional eyes on the information can help:

http://www.lauderdalecountymsarchives.org/uploads/2/6/2/1/2621480/t...

What has me confused are these excerpts:

"I have elected to show Joseph Amis as the second generation as a way of
noting that he is not the immigrant ancestor. Perhaps Thomas Amis really is the
immigrant, but unless further data are found, this remains speculative, as does the
assertion that Thomas was the grandfather, as opposed to the father of Joseph
Amis.

Joseph Amis was born in Tidewater Virginia in 1710 and married Constance
Jones of Essex Co., Va., about 1730. He died in Culpeper Co., Va., in 1794. The
names of his parents are not known, but it is believed that he was the brother of
Thomas Amis who married Rachel Daniel in 1722 and of Ann Amis who married"1726 Samuel Smith. Descendants of these two couples state that they were the children of Lewis Amis who was born 1670 and died 1750, the son of Thomas
Amis who bought land in Gloucester Co., Va. in 1676."

To me, it seems to indicate the father of Joseph (and therefore Ann and Thomas) is uncertain and yet it states "...they were the children of Lewis Amis..."

It says he is listing Joseph as second generation, but I can't find generation one. Of Lewis (usually seen elsewhere as Louis), he states:

"There is minimal information about Lewis Amis, who is said to be
associated with the Manakin settlement, but most of this seems based upon the
name. I have not been able to find any documentation confirming Lewis Amis as
part of the Huguenot immigration of 1700.52 It appears that Mrs. Hodges was
taking her lead from Mrs. Ray, who asserts that the Culpeper Co. Joseph who died
in 1794 is the same as the Essex Co., Joseph.53 Mrs. Ray also makes the same
association with Lewis Amis, “founder of Manakintown.” Interestingly, Mrs.
Pilcher associates the Culpeper Co., Va., family with Louis Amis, but does not
associate them with Joseph Amis.:

Can someone with better ability to decipher all the info in the document ferret out more information about who they are saying the first-generation ancestor of Joseph, Thomas and Ann were?

Thanks in advance for any assistance.