Reason was the son of John Byrn and Mary widow Williams of Scott Co Mississippi.

1850 US Fed Census about John H Byrn Age:40 Birth Year:abt 1810 Birthplace:Miss Home 1850: Scott Miss Gender: Male
Family Number: 300
Household Members: Name Age
John H Byrn 40 1810 MS
Mary Byrn 40 1810 MS
Mary J Byrn 21 1829 MS
Reason Byrn 14 1836 MS ltr mrd Mary Ann Upchurch
John Byrn 12 1838 MS
Shadrick Byrn 10 1840 MS
Elizabeth Byrn 1 1849 MS
Elizabeth Williams 10 dau fr Mary Byrn lst marr
Sarah Williams 8 dau """"""""""""""""""

1860 US Fed Census about Reason Byrn Age 1860: 24
Birth Year:abt 1836 Birthplace: Miss
Home 1860: District 1 Scott Miss Gender: Male
Post Office: Hillsboro
Household Members: Name Age
Thomas Denson 34
Mary Denson 24
William Denson 3
Irene Mccabe 13
Mary Mccabe 11
Henry Mccabe 9
Florence Mccabe 7
Reason Byrn 24

1870 US Fed Census about Reason Byrn Age 1870: 33
Birth Year: abt 1837 Birthplace:Miss
Home 1870: Hallettsville Lavaca, Texas Race: White
Gender: Male Post Office: Hallettsville
Household Members: Name Age
Reason Byrn 33
Mary Byrn 21 1849 GA

1880 Reason Byrn Residence: Halletsville Lavaca, Texas
Birthdate: 1880 Birthplace: Texas, United States
Relationship to Head: Son Father's Name: Reason Byrn
Father's Birthplace: Mississippi, United States
Mother's Name: Mary Bryn Mother's Birthplace: Georgia
Race: White Ethnicity:American Gender: Male
Martial Status: Single Age: 6 months
NARA Film Number: T9-1316 Film number: 1255316
Household Gender Age
Parent Reason Byrn M 43 1837 MS <<
Parent Mary Byrn F 31 1849 GA
Katie May Byrn F 8 1872 TX
John W Byrn M 7 1873 TX
Ada Byrn F 5 1875
Sallie Byrn F 2 1878
Reason Byrn M 6M 1879
Albert Hamer M 19

1900 for Reason P Byrn Residence: Justice Precinct 1 (all between Columbus Rd. & Lavaca River excl. Halletsville), Lavaca, Texas Birth Date: Nov 1879 Birthplace: Texas
Relationship to Head of Household: Son Father: Reason Byrn Father's Birthplace: Miss Mother: Mary A Byrn Mother's Birthplace: Georgia Race: White Head-of-household Name: Reason Byrn Gender: Male Marital Status: Single
Enumeration District: 0081 Image Number: 00346
Household Gender Age
Parent Reason Byrn M Nov 1836 MS NC MS <<
Parent Mary Ann Byrn F Nov 1848 GA GA GA
Ada May Byrn F Nov 1875 TX
Sallie Byrn F Sep 1877 TX
Reason Polk Byrn M Nov 1879 TX
William Penn Byrn M Nov 1881 TX
Guy Thomas Byrn M Dec 1883 TX
Grover Cleveland Byrn M Oct 1888 TX

1905 Reason Byrn died buried Hallettsville Texas.

[wife Mary then goes to Calif w/her sons who care for her after 1910 until she passes by 1930]

1910 US Fed Census about Mary Byrn Age 1910: 61 Birth Year: 1849 Birthplace: Georgia Home 1910: Justice Precinct 1 Lavaca, Texas Race: White Gender: Female Relation to Head of House: Head Marital Status: Widowed Father's Birthplace: Georgia Mother's Birthplace: Georgia
Household Members: Name Age
Mary Byrn 61 Upchurch widow
Guy T Byrn 26 son
Grover C Byrn 21 son

1920 William Penn Byrn Precinct 31 Fresno Calif Est Birth Year: 1882 Age: 38 Birthplace: TX Relationship to Head of Household: Brother Gender: Male Race: White Marital Status: Married Film Number: 1820097 Image Number: 00060
Household Gender Age
Grover Cleveland Byrn M 31y brother to Reason
Mary Ann Byrn F 71y Upchurch/mother to Grover, Wm,Reason
William Penn Byrn M 38y
Margaret A Byrn F 31y Woodall 2nd wife/mrd 1913
John Hallet Byrn M 4y3m son
Willie May Byrn F 2y3m dau

Reason and Mary had 8 children/5 sons/3 daus
1Katie May Byrn 1872 TX+Buford H Henderson
2John Whitfield Byrn 1873 TX+Irnie Demarris Townsend
3Ada May Byrn Nov 1875 TX +Worswick San Fran Calif
4Sallie M Byrn Sep 1877 TX +Harvey Samuel Whistler Sr
5Reason Polk Byrn Nov 1879 TX +Sarah Woodson Woodie Clark
6William Penn Byrn Nov 1881 TX
+1Bertha Leah Hauser 1910 1890 MO-1911 KS
+2Margaret A Woodall 1913 1888 TX-1974 CA
7Guy Thomas Byrn Dec 1883 TX +Frances Kalmus
8Grover Cleveland Byrn Oct 1888 TX +Gladys M 1901 MA-1974 CA
[see more on Mary & kids on Mary's site]