Missing link in Shelley family

I'm looking for the missing pieces between generations.

Mary Wollstonecraft Shelley
1797 - 1851

I believe that she died in England.

CWatters...

Given the unusual name I giess this _might_ be a possible marriage. Bit
late? The way the index works I can't tell who she married - that would be
on the certificate obviously.

Surname First name(s) District Vol Page
Marriages Mar 1840

DENMAN Thomas St. Martin 1136
EDGAR George St. Martin 1136
HELSDON Charles St. Martin 1136
HOLDEN William St. Martin 1136
MOGER Louisa Ann St. Martin 1136
POWER Mary St. Martin 1136
** SMITH Mary Wollstonecraft St. Martin 1136
Wright Sophia St. Martin 1136

Percy Florence Shelley
1819 - 1889

I'm not sure where he died.

Missing links go here.

Levi Richard Shelley
January 16, 1866 - July 22, 1951

I know that Levi died in the Sparta, Ontario, Canada area.