I've been quite amazed by the information that has poured out of this group in response to the initial question. I'm stuck myself on family questions related to these place names. Here is the information as I received it, with some minor clarifications and added dates. Any suggestions for further work that could be done long-distance would be greatly appreciated.
California native Emma Kerr (1874-1917)'s notes about her father Alexander Kerr (1840-1882)'s family. My comments are in [ ]:
[on an envelope]
"Three bro. Kerr came to Newton Limavady from Scotland + bo't whole township ["Tamlaght?"--from Mary Fitch]. set up linen mills and corn mills. Grandfather, William Kerr and John Kerr were the only children of one of these."
"Wm. Kerr married Elizabeth Irvine (my grandmother) one of nine children. Wm, Alexander, Samuel, Ellen, Peggy Ann, Susannah, Jane {married Ritchie in America/ Michigan near Kalamazoo/had a dau. Jane} and one John (?) who went to England. Peggy Ann married Jos. Allcorn. Susannah married Abraham [Allcorn/Alcorn?] { Eliza/John/James}."
"John Kerr married Eliza Torrens. 7 children-Mary, Margaret, Emily, 2 Sarahs, John and twins who died in infancy. John has 1 surviving son Wm."
"Wm Kerr + Elizabeth Irvine, my grandparents, married in Ireland--children, Oliver, Eliza, John, Alexander. Grandmother died of consumption when Alex was about 2 yrs. old."
"Oliver had 5 children
Albert, Elmer (killed), John, Mary, Ella.
Mary-teacher
Ella-milliner
Albert + John farmers + stockraisers in Nebraska"
More of Emma's notes:
[on a piece of scrap paper--comments enclosed in [] are mine, those in parentheses () and {} are as in original]
"Grandfather's mother's name was Miller. She died when Grandfather was very young. She had a brother named Billy Miller, who lived about 4 mi. from Londonderry. 4 children {he had a son Wm., one of his dau. (Peggy) married Robt. Gant}"
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"A cousin of Grandfather's, Sam Hazlet kept shoe store on Chestnut St. (?),Philadelphia. He had three sons."
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"Some of the Kerrs came to New York."
Additional information: The source of this information was Alexander's sister Eliza Kerr Fitch (b. Co. Londonderry 1834, d. Barry, Pike Co., IL 1916) and her schoolteacher daughter Mary, who visited her California cousin Emma in 1906. Emma and Mary's grandmother Betty Irvine Kerr had died in Ireland ca. 1842. Their grandfather William arrived in the Barry area by 1870 and died in 1882. The three sons emigrated in 1853 -- John and Alexander with a cousin? Leslie Irvine, all listed as laborers, on the ship Superior, and Oliver following on the Fanny. Oliver was listed as a clerk, with last residence Drumachose.
William and Betty's daughter Eliza had emigrated to Barry, Pike County, Illinois, USA via New York with her uncle and aunt John and Eliza Torrens Kerr and their two young children ca 1849. Eliza Torrens' brother John and sister Sarah Jane followed via Phila in 1851, leaving an unmarried brother William to farm in Carrowclare, Moyse, Londonderry. (When William Torrens died in 1882, his brother John returned to settle the estate. The Torrens' ancestral burial grounds were at the Presbyterian Church in Ballykelly.)
I could not find Leslie Irvine or Sarah Jane Torrens after their arrival in Philadelphia, but John and Oliver Kerr and John Torrens all settled in the Barry area. Alexander Kerr was in California by 1860. As far as I know all of these families were Presbyterian, and in the U.S. were farmers and teachers.
Thank you in advance for any insights,
Julie