I have found a christening for an Elizabeth Petrie 22 Apr 1807 SAINT VIGEANS,ANGUS,SCOTLAND which is the same church as Elizabeth and Hugh married in 1831.
Just for your records on this line, St Vigeans is a small village and parish in Angus, not a church
I hear the sound of cans of worms being opened!
First of all, it was unusual for a wedding to be held in a church building. Most weddings took place in the bride's home or, if she had not parents living or whe married a long way from home, in the manse. Only towards the end of the 19th century did weddings in halls, hotels and restaurants become the done thing, and it wasn't really until the 20th century that a church wedding became fashionable.
St Vigeans is a parish on the coast of Angus and it includes the village of St Vigeans and also Auchmithie, and originally what was to become the much larger town or Arbroath.
The next-door parish of Arbroath (or Aberbrothock) was established in 1560 by taking the burgh out of the parish of St Vigeans and erecting it into a separate parish.
The burgh of Arbroath outgrew its parish and by the time of Elizabeth Petrie it had extended into the parish of St Vigeans, so that quite a large part of the burgh of Arbroath was in the parish of St Vigeans, not the parish of Arbroath. So it's quite common to find a baptism recorded in St Vigeans which actually occurred in Arbroath.
There is an ancient kirk in St Vigeans, which has managed to retain its village-like atmosphere in spite of being almost surrounded by the suburbs of Arbroath. Parts of the kirk date from the 12th century and parts from the 15th century. See
http://www.geograph.org.uk/search.php?i=91106185From 1919 onwards the two parishes made up the combined registration district of Arbroath and St Vigeans, though they remained ecclesiastically separate parishes.
In practical terms, it probably helps to think of Arbroath and St Vigeans as two halves of a sort of single entity when researching the older records.
Of course once you have viewed that death certificate and verified that she was the widow of Hugh R Campbell, you should have the names of her parents and you won't have to guess whether she was born in Arbroath or in St Vigeans.