Frederick Floyd, Horry County, SC

I'm still researching this family. Any info will be appreciated.

Frederick Floyd was born in about 1769.He moved into Horry County late 1700's.HIs brothers were Francis Lewis, James and Thomas.Possibly there was a Samuel and Austin(Osten).Parents are unknown!Some think Andrew Johnson Floyd, others think a Samuel Floyd who died in Horry County about 1800.No idea about Frederick's wife or wives!
Children as Follows:

1)Katherine Floyd, born about 1790
married Samuel Garrell(Gerrald),Jr.
2)Samuel Floyd, 1791, moved to MS
married Avy Jane Nichols
3)James Floyd, born 1790/1795, moved to
MS
4)Nancy Ann Floyd, born about 1795
married Patrick Lewis
5)Patience Floyd, born about 1800,
married Henry Garrell(Gerrald)
6)Wright Floyd, born 1802
married Demaris ?
7)Anna Jane Floyd, born about 1805
8)William Everett Floyd, born 1806
married Martha Jane Ware in GA, 1837
9)Hardy Floyd, born 1809
10)Mary Floyd, born
11)Frederick Floyd, Jr., born

Any info on these families will be appreciated.Especially the parents of Frederick, Sr. and his wife.

Mark