- [S274] James M Donnell, online https://gw.geneanet.org/philateech*1t66cj4*_gcl_au*MTQ0ODYyODQ5LjE3MTc0MzY5Nzg.*_ga*MTE3NDExNzg1OC4xNzE3NDM2OTcx*_ga_LMK6K2LSJH*Nzk1NzQwZjgtYmY4NC00ZTM4LWI3MDktYTZkYjdkNTAwMzkxLjIuMS4xNzE3NDU2NzQ4LjAuMC4w. Hereinafter cited as James M Donnell.
- [S277] Martha R. Donnell, online https://gw.geneanet.org/philateech. Hereinafter cited as Martha R. Donnell.
- [S278] William Albert DONNELL, online https://gw.geneanet.org/philateech*10yhyga*_gcl_au*MTQ0ODYyODQ5LjE3MTc0MzY5Nzg.*_ga*MTE3NDExNzg1OC4xNzE3NDM2OTcx*_ga_LMK6K2LSJH*Nzk1NzQwZjgtYmY4NC00ZTM4LWI3MDktYTZkYjdkNTAwMzkxLjIuMS4xNzE3NDU3ODEwLjAuMC4w. Hereinafter cited as William Albert DONNELL.
- [S289] George Cabell Greer, Early Virginia Immigrants, 1623-1666 (Richmond, Virginia: W.C. Hill Printing Co., 1912). Hereinafter cited as Early Virginia Immigrants, 1623-1666.
- [S290] Al Sharp, Langford/Lankford Families of Albemarle County, Virginia, 2021. Hereinafter cited as Langford/Lankford Families.
- [S291] Services Conducted for Mrs. L. A. Donnell, The Canyon News, Canyon, Texas, 8 April 1965, 10. Hereinafter cited as The Canyon News.
- [S294] Promise of Rich Country Brings Pioneer to Plains, The Canyon News, Canyon, Texas, 20 May 1965, 14. Hereinafter cited as The Canyon News.
- [S313] Galvin, 1950 Federal, unknown repository address, Guadalupe, Texas unknown repository.
- [S315] Benjamin Hall Massey, online https://gw.geneanet.org/kaypurdie. Hereinafter cited as Benjamin Hall Massey.
- [S325] Abraham Saucier, online https://www.wikitree.com/wiki/Saucier-595. Hereinafter cited as Abraham Saucier.
- [S336] Madaline SIefke, "Re: Estills and Siefkes," e-mail message from e-mail address (Ithaca, New York) to Alton Donnell, 16 July 2025. Hereinafter cited as "Re: Estills and Siefkes."