Looking for any information about my gggrandfather DR. JOHN DUFF BROWN and his son DR. JOHN DUFF BROWN JR.who lived in Oakland, Colorado County, Texas from around 1840 to 1880. Duff Sr.'s wife was MARY ANNAH MAYES. She died in Oakland in 1865 and is buried there. Some of the Mayes family lived in Oakland until the 1950s at least. Mary's father was JOSHUA PRITCHARD MAYES and her mother was LUCINTHA HENDERSON. Lucintha's brother was THOMAS HENDERSON. Lucintha married a second time to CALEB JOINER.If anyone has anything farther back than this, especially about the Mayes and Henderson's it would be appreciated. Also interested in any descendants.