familysearch.org [document image available] I know the initial is different, but all other info fits, and their 1st ch b 1890. Sam signed the license and his initial is definitely G,so don't know why the document continually says J.
7-11-1889 Bedford Co PA Samuel J GREGORY 24 miner s/o Samuel and Mary A GREGORYm. Grace WILLS 24 d/o Samuel and Eliza WILLS
Los Angeles Times7-21-1933 Grace GREGORY of 1781 W 134 St, Gardena; wife of Samuel G; mother of Roy GREGORY; Mrs Beatrice MC GREW, Gardena; Earl GREGORY Oswego IL; Mrs Florence HOSKINGS and Mrs Ruby GREGG, Butte MT Whittington Funeral Parlor, Gardena Interment Roosevelt Park
Sam's obit not found in L A Times. The 1881 UK census online for the GREGORYs, Cornwall.
1880 Huntingdon Co PA, Sam/Eliza WILLS both state b Cornwall England
Didn't find marriage for Sam/Eliza WILLS, but found Grace's christening record, also bro Samuel Grace WILLS chr 2-5-1865 Gwenap, Cornwall England; d/o Samuel and Eliza
Samuel WILLS chr 9-2-1866 Gwenap, s/o Samuel/Eliza
This may be Grace's father.. Samuel WILLS chr 11-17-1839 Gwenap; s/o Samuel/Elizabeth