Hi,
You didnt say what year your grandmother was born , but this looks like a possible for her parents in 1871
James Watt...head...age 44..brn Pitsligo, Aberdeenshire...shoemaker
Jessie A Watt..wife..age 39..brn Tyrie, Aberdeenshire
William W Watt..son..age 12..brn Strichen, Aberdeenshire...scholar
Mary I Watt..daur..age 10..brn Strichen, ..scholar
Alexander Watt..son..age 8..brn Pitsligo....scholar
Elizabeth Watt..daur..age 6..brn Strichen...scholar
George Watt..son..age 4..brn Strichen
Jessie Watt..daur..age 1..brn Strichen
Living at South or Water Street, Strichen, Aberdeenshire
Parish Strichen, ED 4, line 3
Susan