You are right, I totally missed the ward being 1 and not 3. The list of churches I posted were in ward 3. If it was the Ward 1 John McLaughlin you are interested in, then here are a list of Catholic Churches in Ward 1 for that time period. Dates established are in parens.
St Agatha (1871)
St Frances de Sales (1867)
St John Nepomuk (1854)
Sts Peter & Paul (1849)
Here is a link to a transcribed 1860 St Louis City Directory: http://www.rollanet.org/~bdoerr/1860CyDir/1860CD.htm
. I found John McLaughlin's under 3 different spellings: McGlaughlin, McLaughlan and McLaughlin. The John's living at 90 Christy Av and 71 Green are in north St Louis, and definitely not Ward 1. The John McLaughlan, tanner, reside at Jackson betw Barton & Victor is in Ward 1.
Finally, the above list of churches is nearly identical to a list I posted to you back in 2010 at this link:http://boards.rootsweb.com/localities.northam.usa.states.mis...
. The only difference is that the new list do not include St Anthony of Padua (it is outside the city limits) and St Mary of Victories (it is not in ward 1).
David in Pennsylvania