Finding George Courtney c1841

The best chance we have of finding George is to identify the specific segments of DNA his descendants have inherited from him. Abigail Roberts (nee Courtney) c1912 The only known descendant of George is his daughter Abigail Courtney, she married Edward Roberts in 1891.    Abigail had two sisters, Edith and Alberta.  Edith however is only a half sibling sharing their mother Abigail Paice, so no Courtney DNA there.  It is unknown what happened to Alberta, she was Abigails twin and alive and well in the 1871 census at 3 months old.  However, there is no record of her in any subsequent census, nor can I find a death record.   Abigail, George and Alberta are all missing from the 1881 England census so we cannot be sure if she was with them at that time.  I have concluded Alberta probably died young and the death was not registered even though it would have been a requirement at that time We can currently seek to identify up to a maximum of 25% of George Courtney's DNA inherited by his

According to the records on Find My Past for the 1871 England Census there were 70 records for the name COURTENAY recorded at Middlesex.  This equates to 31 family groups.  Could George be related to one of them?  I am progressively adding links to these families at Wikitree.   Filling up the census paper.   Punch 1851 PD 1.  Mile End Old Town, Jeoffries Terrace      * Maria COURTENAY b1829 in Blois, France (possibly a Courtenay by birth?)      * Louisa TURNER b1847 (husband William b1841)     * Henry COURTENAY b1857     * Percy COURTENAY b1862     * John COURTENAY b1867 2.  Bethnal Green #1, Nelson Place      * Elizabeth COURTENAY b1841 nee McLenan (widow of Robert J COURTENAY of Ireland)     * Augusta COURTENAY b1859     * Sydney COURTENAY b1864     * Adeline COURTENAY b1868 3.  Bethnal Green #2, Charles Street      * Frederick COURTENAY b1852 (working as an apprentice, lodging with White family)      4.  Bromley #1, Alton Street     * William COURTENAY b1841 Ireland     * Cather