I am not related, but thought I would share this in case it helps with someone's family tree.
While researching a microfilm on the births of Van Buren County, Iowa USA, I stumbled upon a couple of Lock records and decided to do some deeper digging in to this family.
Descendants of John Locke
1 John Locke
. +Elizabeth McDowell
2 John Locke b: August 1829 in Larne, County Antrim, Ireland d: July 16, 1906 in Jefferson County, Iowa Burial: Smith Cemetery, Birmingham, Iowa
.... +Mary McDowell m: December 28, 1853 in Tickmacrevan, County Antrim, Ireland b: July 10, 1819 in Larne, County Antrim, Ireland d: November 22, 1908 in Jefferson County, Iowa
.. 3 Samuel Locke b: March 03, 1855 in Jefferson County, Iowa d: October 15, 1933 in Van Buren County, Selma, Iowa Burial: Maple Hill Cemetery
...... +Maud D. Cole m: February 14, 1894 in Jefferson County, Fairfield, Iowa b: February 02, 1867 in Iowa d: June 21, 1928 in Van Buren County, Birmingham, Iowa Burial: Maple Hill Cemetery
.... 4 Mary Everella Locke b: March 10, 1895 in Van Buren County, Birmingham, Iowa d: May 02, 1985 in Henry County, Mount Pleasant, Iowa Burial: Mount Moriah Cemetery
........ +George S. Hill m: June 25, 1924 in Wapello County, Blakesburg, Iowa
.... 4 Maud Eleanor Locke b: March 10, 1897 in Van Buren County, Birmingham, Iowa d: February 15, 1950 in Van Buren County, Douds, Iowa Burial: Mount Moriah Cemetery
........ +Wallace Robertson
....... 5 Dale W. Robertson b: September 10, 1922 in Van Buren County, Iowa
....... 5 Rex Lloyd Robertson b: November 01, 1926 in Van Buren County, Iowa
.... 4 Edith Elizabeth Locke b: August 04, 1898 in Van Buren County, Birmingham, Iowa d: May 14, 1970 in Van Buren County, Douds, Iowa Burial: Mount Moriah Cemetery
........ +Charles E. Talbott m: February 16, 1921 in Wapello County, Ottumwa, Iowa b: Abt. 1900
....... 5 Robert Wesley Talbott b: July 14, 1922 in Van Buren County, Iowa
.. 3 Mary Ellen Locke b: August 08, 1856 in Iowa d: March 03, 1918 in Jefferson County, Iowa Burial: Smith Cemetery
.. 3 Jane Locke b: February 22, 1860 in Jefferson County, Fairfield, Iowa
.. 3 Elizabeth Locke b: August 02, 1861 d: December 07, 1951 in Jefferson County, Fairfield, Iowa
...... +S. N. Stonebraker m: May 16, 1892 in Jefferson County, Iowa
There is a wonderful biography on John Lock and family on the Find A Grave web site.
Hope this helps someone