Besides the spellings Bryan and Brien, there were also a number of secondary names in County Cork, among them Mangane (Manning); Sowney; Glavin (also Galvin) and Glanton; and possibly Cummins (Camain) and Lordan.
Sowney has been observed in Ardfield and Rathbarry.
Brien Camain may have yielded the name Cummins, a local Cork derivation separate from the usage of the name elsewhere on the island.
Manning (Mangane)
Mangane and Manning may be O'Brien Mongun. See "The Decline of the Ui Eachach" in O'Mahony's "Story." Nora Hickey's reference is also useful.
The name Manning and alternate Mangane have been observed in conjunction with Brien in Minanes, Drinagh. Three men - John, David, and Charles were living in Minanes in the first half of the 19th century.
Charles married Mary Collins of Lissane, Caheragh 4 Feb 1826. A daughter, Kate Mangane, was baptized in Drinagh 20 Jan 1827. David Mangane was her godfather.
John, David and Charles Manning were listed in Minanes in the 1833 Drinagh Tithe Applotment. Notice the "B" after each Christian name - John B, David B, Charles B.
John, David and Charles Bryan were also listed in Minanes in the land valuation notebooks for Drinagh prior to the publication of Griffith's Valuation. By the publication of Griffith's Valuation, their names were gone.
Sowney (Souny and Sawney)
Sowney was a secondary name for Brien in the Ardfield & Rathbarry area. Sowney was also used as a secondary name for other major families, so researchers need to be cautious in their investigations.
Edward and John Sowney were listed in Dunowen in the 1824 Ardfield TAB, then again in the 1851 Field Book. Notice that in the Field Book the enumerator was not even consistent with different spellings of the real surname - Brien and Bryan.
Dunowen, Ardfield in Griffith's Valuation shows Sawney as a modifier for Brien in 36a and 40ABCDE.
