Ah, found Martha's death I think. She was registered only by her married name, no maiden name:
1868 HILL MARTHA 40 URR /KIRKCUDBRIGHT 884/00 0018
William Hill may have remarried by 1881 and a possible birth county in Ireland for him:
William Hill 54, granite polisher, b. Tyrone Ireland
Mary Farrel 45, b. Ireland, Knigs County
Mary Hill 13, b. Dalbeattie
Catherine Hill 7, b. Dalbeattie
John Bradly 48, boarder, b. Ireland, Belfast
Address: Sunnyside, Dalbeattie, Urr
And the marriage entry on IGI:
WILLIAM HILL Marriages: Spouse: MARY FARRELL
Marriage: 04 AUG 1872 Dalbeattie, Kirkcudbright, Scotland
And one of the daughters' births, also on IGI:
CATHERINE HILL Birth: 10 APR 1873 Dalbeattie, Kirkcudbright, Scotland
Regards.
Monica
