Notes:

1891 Census - Phillack:
11,Roseworthy,1,Susan E. Mitchell,Head,M,,46,,,Phillack Cornwall,, ,,,
Annie M. Mitchell,Dau,S,,27,Charwoman,Employed,Camborne Cornwall,, ,,,
Hannibal J. Mitchell,Son,S,19,,Tin Streamer,Employed,Camborne Cornwall,, ,,,
William J. Mitchell,Son,S,17,,Tin Miner,Employed,Camborne Cornwall,, ,,,
Edwin Mitchell,Son,,10,,Scholar,,Camborne Cornwall,, ,,,
Susan J. Mitchell,Dau,,,8,Scholar,,Camborne Cornwall,, ,,,
Thomas Mitchell,Son,,4,,Scholar,,Camborne Cornwall,, ,,,
Richard N. Mitchell,Son,,3,,,,Gwithian Cornwall,, ,,
Emily Rowe,Mother,W,,76,Bed Ridden,,Not Given Unknown,,

Birth:
Searched the Online Parish Clerk site for christening in Mawgan. No Emily Tyrack.

Emily married Rowe, John 9 Oct 1836, Camborne, Cornwall, England. John was born 1808, Camborne, Cornwall, England; was buried 11 Jan 1879, Phillack, Cornwall, England. [Group Sheet]

Notes:

I searched Phillack parish marriages 1830-1859 for John and Emily's marriage, but it was not there.
http://freepages.genealogy.rootsweb.ancestry.com/~phillack/marriages/mar1830_1837.htm

I searched St. Erth parish marriages 1826-1855 for John and Emily's marriage, but it was not there.
http://freepages.genealogy.rootsweb.ancestry.com/~sterth/mar1826_37.htm

Marriage date from newFamilySearch.org
Sealing dater from newFamilySearch.org

Married:
Searched the Online Parish Clerks site for marriage and it wasn't there.

1. Rowe, John was christened 5 Jan 1840, Phillack, Cornwall, England; died Yes, date unknown.
2. Rowe, Susan Emily was born 4 Feb 1845, Phillack, Cornwall, England; died Yes, date unknown.
3. Rowe, William was born 1847, Phillack, Cornwall, England; died Yes, date unknown.
4. Rowe, James was born 1850, Phillack, Cornwall, England; died Yes, date unknown.
5. Rowe, Elizabeth was born 1851, Phillack, Cornwall, England; died Yes, date unknown.