There was another STEVENSON family living in St. Sylvester at time your family lived there.I wonder if their could have been a connection?
Descendants of WILLIAM STEVENSON
Generation No. 1
1.WILLIAM2 STEVENSON(UNKNOWN1) was born Abt. 1807 in Isle of Man.
He married JANE CROMWELL September 10, 1832 in Quebec City, Quebec, Canada, daughter of JAMES CROMWELL.She was born Abt. 1811 in Ireland, and died April 19, 1879 in St. Sylvester, Lotbinière County, Quebec, Canada.
Children of WILLIAM STEVENSON and JANE CROMWELL are:
i. ROBERT3 STEVENSON, b. February 07, 1837, St. Sylvester, Lotbinière County, Quebec, Canada; m. CAROLINE WILSON, November 28, 1861, St. Sylvester, Lotbiniere County, Quebec, Canada.
ii. JAMES STEVENSON, b. October 13, 1833, St. Sylvester, Lotbinière County, Quebec, Canada.
iii. MARY ANN STEVENSON, b. October 29, 1835, St. Sylvester, Lotbinière County, Quebec, Canada.
iv. THOMAS STEVENSON, b. October 05, 1841, St. Sylvester, Lotbinière County, Quebec, Canada; d. 1932; m. ELIZABETH CROMWELL, July 03, 1866; b. January 12, 1848, St. Sylvester, Lotbinière County, Quebec, Canada; d. 1935.
v. MARGARET STEVENSON, b. Abt. 1839; d. February 01, 1845, St. Sylvester, Lotbinière County, Quebec, Canada.
I found a few records on your STEVENSON family.
1851 Census of Canada East, Canada West, New Brunswick, and Nova Scotia
Name: John Stevenson
Age: 58Estimated Birth Year: abt 1794
Province: Canada East (Quebec)
District: Lotbinière County
District Number: 14
Sub-District: St Sylvestre
Sub-District Number: 203
Page: 141Line: 1
Roll: C_1127Schedule: A
JOHN STEVENSON, age 58 occ; Cultivator b. Prope?
ELIZABETH STEVENSON age 57?, b. Prope?
MARGARET STEVENSON age 22 b. Canada
ROBERT STEVENSON age 17 b. Canada
Saint Sylvester West Cemetery, Saint Sylvester, Lotbiniere County, Quebec
Stevenson, Margaret, d. 1857, wife of Rev. William Scott
============================================================Quebec Vital and Church Records (Drouin Collection), 1621-1967
Name: William Scott
Spouse: Margaret Stevenson
Event Year: 1853
Event: Mariage (Marriage)
Place of Worship or Institution: Québec (Presbyterian) (Québec (Chalmer`s Church))
Province: Québec (Quebec)
WILLIAM SCOTT, minister of the gospel at St. ?, and MARGARET STEVENSON, St. Sylvester
were married at the residence of the bride's father at Sylvester
on 5 Oct 1853
/s/ WILLIAM SCOTT
(one signature too faint to read)
/s/ JAMES WOODSIDE
/s/ HUGH WOODSIDE