Samuel William Cannon Sr was the son of Robert Cannon & Elinor Unknow. Of the siblings I am aware of are: Nathaniel Cannon (1760 - 18 Apr 1844) and Rebecca Cannon (abt 1868 - 1825). Little has been found on Rebecca.

Samuel married Sarah Riser abt 1797 in Georgia possibly and had the following children:
James Madison Cannon ( 1799 - 16 Jan 1912)
Mary Samantha Cannon (Middlebrooks) (1801 - 1868)
Keziah Cannon (Hancock) (1802 - 1868)
George Washington Cannon (1803 - 18688
John Cannon (1805 - 1866)
Lucretia Cannon (Hunt) (1810 - 1868)
Samuel William Cannon Jr (11 Nov 1811 - 03 May 1856)
Temperance Cannon (Saville) (1812 - 1868)
Benjamin S Cannon (1813 - 10 Nov 1863)

A will was left by Samuel in Coweta Co, Georgia that lists all his children:

Georgia: Coweta County: Last Will & Testament of Samuel Cannon8 Aug 1854====================================================================USGENWEB NOTICE: In keeping with our policy of providingfree information on the Internet, data may be used bynon-commercial entities, as long as this messageremains on all copied material. These electronicpages may NOT be reproduced in any format for profitor for presentation by other persons or organizations.Persons or organizations desiring to use this materialfor purposes other than stated above must obtain thewritten consent of the file contributor.The submitter has given permission to the USGenWebArchives to store this file permanently for free access.This file was contributed by:Dianne Overstreet [email protected]====================================================================Samuel Cannon Last WillGeorgia, Coweta CountyIn the name of God Amen. I Samuel Cannon of said State and County being of advanced age and knowing that I must shortly depart from this world deem it right and proper both as respects myself and my family that I should make a disposition of the property with which a kind providence has blessed me I therefore make this my last will and testament hereby revoking and annulling all other heretofore made by me.Item 1st I desire that my body be buried in a decent and Christian like manner suitable to my circumstances and condition.Item 2nd I desire and direct that all my just debts be paid without delay by my Executor hereinwith named as I am unwilling my Creditors would be delayed of their rights especially as there is no necessity for delaying.Item 3rd I give and desire to my wife Anna Three hundred dollars and one bed and bedding and all that she brought my house besides the bed and bedding so far as relates to household furniture.Item 4th I give and desire to my daughter Kesiah Hancock and her children my negro girl named Emaline and her increase.Item 5th I give and desire my son James Five hundred dollars.Item 6th I give and desire to the children of my son John Five hundred dollars and do appoint said son John Cannon as Trustee to manage the money for his children.Item 7th I give and desire to my daughter Mary Middlebrook, Five hundred dollars.Item 8th I give and desire to myh son George W. Five hundred dollars.Item 9th I give and desire to my daughter Lucretia Hunt Five hundred dollars.Item 10th I give and desire to my son Samuel Six hundred dollars.Item 11th I give and desire to my son Benjamin S. Five hundred dollars.Item 12th I give and desire to the children of my daughter Temperence Savell One dollar.Item 13th I desire that after the above and foregoing legacies are paid that the balance that may be left shall be equally divided among my Legatees except my wife Anna and Temperence Savell.I desire that all of any property be sold by my Executor as soon as the Law will permit it to be sold. I constitute and appoint Samuel Cannon and James Cannon Executors to this my last will and testament this August 8th 1854.Samuel CannonWitnesses were F. Drewry, ----White, Alex Peavy, and C.W. Culpepper.