Re: Capt. William Polk's grandparents?
Yes Zek Polk who married Sophia Neely is son of William & Marg Taylor Polk, Marg is his 2nd wife, his 1st was Mary Wilson , dau of Sam Wilson & Mary Osborn Winslow.
As far as Rank of the William's , depends on what records of which war they served'
For one William Sr 1662 -1740 with wife Nancy Knox (also in my family lines) served in a number of wars in Ireland, still unsure of rank, then once here in his local Mitilia he did in deed serve at rank of Cpt.
William Jr unsure of rank or even if he served in any military activity,
William III now this boy was rank of Cpt. an served in French/Brit-Indian Wars.
I was told by one , that Wm III serve with my Surname Ancestor Cpt.John Carruthers during Pontiac's revolt, my ancesrot was badly wounded,he was married to Sarah Neely, but have found nothing too support Wm's presant's. - These did serve in what today we call the "Black Watch"
Wm III (1725-1802) wife M.Spratt his brother John was rank of Cpt. and serve under Gen.Evan Shelby - John married Evan's daughter Eleanor, Evan Shelby's granddaughter Eleanor was married to the Nephew of my Surname ancestor.
Wm III's brother Thos married Suzy Spratt
WmIII's sister Suzy married Ben Alexander -this surname you should research too better understand the family and the relatonships and the who's who in Polks and others that will suprize you ,it will open doors and settle a load of confusion.
Wm III's sister Margaret married McRee who married in surname and also explains the families.
I have noting on Issac Lennard. I may in the future ,all I can say concerning this is that Sophia Neely had a brother and 1st cousin named Issac.
So far none of us have collected Sophia & Zek's offspring.
You are streight lining and researching, I and those connected to me are Investiagating the complete families and their relationships we do trip over the later generations as connecting surname's of common recycle, and they do. Should I find anything I will see that it forwarded to you.