Hi
Although I can't find her baptism yet, Catherine Slamon or Slemen's younger sister Marianne was baptised at St. Andrews RC Church, Westland Row, Dublin in 1836. Catherine was also buried in the Ford Roman Catholic Cemetery in Liverpool, along with her aunt Margaret Flynn. Catherine died in 1906 while her aunt died in 1899.
Catherine's parents Thomas Slemen and Anne Flynn married 10 Apr 1826 in St. Andres, RC Church.
My great grandmother Anne Jane Perry also christened some of her children as Roman Catholic and Protestant at the same time in Liverpool. Finally, Anne Jane's sister was I believe a nun working as a teacher in a local Liverpool convent.
By the way do you know if the early baptism registers (bef 1836) of St. Andrews Church in Westland Row, Dublin are still in existence or online somewhere as they don't appear to be on a number of the online websites.
Steve