Office Hours:

(Closed 12 pm - 1 pm)

Monday  ~  9am - 6pm

Tuesday  ~  9am - 6pm

Wednesday  ~  9am - 5pm

Thursday  ~  9am - 6pm

Friday  ~  9am - 6pm

Saturday - Sunday  ~   Closed


Tel.  (956)565-1141


Parish Committees and Groups

      • Altar Society
      • Pastoral Council
      • Finance Council
      • Long-Range Planning Committee


Long-Range Planning Committee - Established in January 2011, this group was convened to assist the church in planning for the future.  The groups charge was to evaluate existing ministries as well as building and facilities.  They have met as a group and with the Pastoral Council to discuss and prioritize initiatives.  A report on discussions of both groups can be viewed by click on the link below.


[ Long-Range Committee Preliminary Report - Mar 2011 ]


Knights of Columbus - Mercedes' Local Council #12869 - Infant of Prague is a member of the Texas State Council and of the Knights of Columbus.  Their service to all is framed by its guiding principles of charity, unity, fraternity, and patriotism.  Learn more...


Catholic Daughters of America - Under the patronage of the Blessed Mother, the Catholic Daughters of the Americas are united by their faith in Jesus Christ, in their devotion to the church and the Holy See.  The Catholic Daughters of the Americas is one of the oldest and largest organizations of Catholic women in the Americas. They donate to charities, administer scholarship programs and strive to be helping hands where there is pain, poverty, sorrow or sickness.  The CDA motto is Unity and CharityLearn more...


OLM Confirmation Retreat
OLM Chalupa Volunteers 2012

OLM Confirmation Mass 2011



OLM Altar Server Summer Trip 2011


Despedida for
Arturo Castillo - Seminarian


OLM Chrism Mass 2011


OLM Rite of the Elect 2012

OLM Mardi Gras 2012

OLM High School Theology 2012

OLM Appreciation
Breakfast 2010


OLM Fiestas Patrias 2010



OLM Spring Fest 2010


From the altar servers...

On our trip to San Antonio, I had a blast!!! At six flags, I went on a ride called
Bugs White Water rapids like five times, and even though I got soaked I had an
awesome time at Six Flags!!! The Next day we went to the missions, we were able
to have Mass at the first mission Concepcion.  Mass was really nice!!!  Then we went to Mission San Jose where we had a tour guide, followed by Mission San Juan then we ended up going to Mission Espada (that was a surprise)!  One thing that everywhere we went had in common was that they were all hot cause it was like 101 everywhere!  All in All I had a blast!!!  Fun!!! Kewl!!! (Cool) EPIC!!! Blast!!!

This was my first trip in three years as an altar server.  I really enjoyed myself both at the Missions and Fiesta Texas.  This trip was a great experience for me and others.  This trip was really organized, educational and a lot of fun.  I would like to thank everybody who helped with this trip .  I hope we have similar trips in the future.  What I enjoyed the most was seeing everybody have fun.  Once again I would like to thank everyone involved especially Father Greg.

Danny Salinas

On Monday, June 13th the Altar Servers of Our Lady of Mercy went on a field trip to San Antonio.  We left early and spent seven hours at Fiesta Texas.  We got on rides like the Gully Washer and the Bugs Bunny Water Rapids.  This was a lot of fun for all the Altar Servers.  Later that night when we got to the hotel and we all went swimming in the pool.  The next morning we went to the Mission Conception where Father Greg held a Mass where the altar servers participated.  Our singing sounded nice in the old church.  We also went to the Missions of San Jose, San Juan and La Espada. I hope next year we have another great opportunity like we had this year.  I would like to thank our church and Father Greg for all the support given to us for this trip.

Analisa Salinas

First of all I would like to thank everyone who helped out on this trip. The parents, Mr. Ayala, Arturo, and Fr. Greg. Without them this wouldn't be possible. It was totally worth waking up at 5:30am. We traveled in 3 rental vans and some went in personal vehicles. Thanks to Mr. Salinas we navigated easily through The Alamo City to arrive at Six Flags at around 11:00. There we separated into small groups. My group was at the waterpark all day enjoying the the water. The water was FREEZING!!!!!!!!!!! Later we were joined by others who wanted to cool off after riding rollercoasters like The Rattler. Afterwards we retreated to the hotel to relax a little. But at 8:00 we were all in the hotel pool. (Sometimes I think that we shouldn't have done that.) After that we were really hungry so we used coupons from Whataburger. The next day we traveled to Mission Concepcion to have a self-guided tour. Afterwards we celebrated Mass at their beautiful church. Then we went to Mission San Jose for a tour of their wonderful mission. It was under reconstruction so we couldn't go inside the church. Next, we went to Mission San Juan.  They had a small chapel and we prayed. We didn't stay long though. It was hot over there  with few trees. So we left after 15 minutes. Finally, we went to Mission Espada. A serene chapel and the hope of finding a small stream( with no luck) were the only highlights. Afterwards we headed home. At around 9:00 we got back to Our Lady of Mercy. God bless.

Richard Madrigal.