Madison Calvin Davidson...says that Miss Rosa Lula Rankin is desirous of marrying J. M. Long, that she is under age and has no father living but has the full consent of her mother W. Adeline Rankin to marry said J. M Long and that this affiant is her natural uncle.

Madison Calvin Davidson had married James Monroe Long's sister, Mary Louisa Long. M. C. Davidson was also a brother of Wincy Adeline Davidson Rankin, mother of Rose Lula Rankin, so James Monroe's brother-in-law was his wife's uncle.
The 1880 census shows the families in Frio County, Texas
93/106
Long, James M w m 26 farmer TX TN TN
Lula w f 20 wife TX NC TX
Laura w f 1 dau TX TX TX
Rankin, Adeline w f 38 mother-in-law ARK ARK ARK
Mollie w f 17 dau TX NC ARK
Williamina w f 14 dau TX NC ARK
Davidson, Madison C w m 27 farmer TX TN TN
Mary L. w f 25 wife TX TN TN
Julia F w f 3 dau TX TX TX
James M w m 10/12 son TX TX TX
Mary L w f 20 sister TX TN TN
105/119
Long, L J w f 61 widow TN TN TN
105/120
Long, W H w m 35 married TX TN TN
Paralee w f 17 TX TN TN
| 1) Rose Laura | 1878-? | m. 1900 Richard W. Kercheville |
| 2) Lilly Ethel | 1880-1963 | m. Charles Thomas Sherman |
| 3) Francis Marion, 1883-1908 |
James Monroe Long was known as "Roe". He died 7 February 1918. Julia Williford Long died 5 March 1945.
The children of James Monroe Long and Julia Monroe Williford Long were:
| 1) Matthew E. | 22 Feb. 1887-? | married Sadie Forest |
| 2) James A. | 1889- | |
| 3) Edmond Willis | 13 April 1891- | |
| 4) Daniel | 26 Mar-10 April 1893 | |
| 5) Ruth C. | 14 April 1894-? | married Benny Christian |
| 6) Samuel Monroe | 27 Dec 1896-1969 | |
| 7) Barbara Esther | 1 July 1900-1975 | married George Cox |