While the marriage record shows the maiden spelling as Richburg the parents headstone would imply the marriage record spelling was a common error with the family surname. At least one sibling and many grandchildren it would appear decided to just go with the spelling rather than correcting the error and probably the pronunciation too.

1880 - US Census - Precinct 3, Gonzales, Texas
Household ................Role ........Sex ......Age Birthplace
James Richbourg .....Self .........Male ....23 ..Texas
Ida May Richbourg ...Daughter Female 3 ....Texas
Martha E Richbourg .Daughter Female 2 ....Texas
Mary Richbourg ........Wife ........Female 24 ..Texas
Minnie B. Richbourg Daughter Female 4 ....Texas

1890 - US Census - Destroyed in 1921 census fire

1900 - US Census -

1910 - US Census - Justice Precinct 5, Lamar, Texas
Household ............Role .........Sex .....Age Birthplace
Charley Brammer .Head .......Male ....39 ..Texas
Ida Brammer .........Wife ........Female 31 ..Texas
Allie Brammer .......Daughter Female 10 ..Texas
Mary Brammer ......Daughter Female 5 ..Texas
Malcond Brammer Son ..........Male ....1 ..Texas

1920 - US Census - Sayre, Beckham, Oklahoma
Household ..............Role ........Sex .....Age Birthplace
Thomas C Brannen Head .......Male ....51 ..Texas
Ida M Brannen ........Wife ........Female 42 ..Texas
Allie I Brannen ........Daughter Female 19 ..Texas
Mary T Brannen ......Daughter Female 14 ..Oklahoma
Malcom A Brannen .Son ..........Male ....11 ..Texas

1930 - US Census - Sayre, Beckham, Oklahoma
Household .............Role ..................Sex .....Age Birthplace
T Charley Brannen Head .................Male ....61 ..Texas
Ida Brannen ...........Wife ..................Female 52 ..Texas
Mamie Mitchell .....Granddaughter Female 8 ....Oklahoma
Charles Mitchell ....Grandson ..........Male ....6 ....Oklahoma

1940 - US Census -