Looking to correspond with DOWNEY descendants of St. Louis, MO

I have traced an ancestor of my husband, Agnes Jorns Downey Nix to St. Louis, MO.She married Patrick J. Downey in 1888 at St. Louis, and they had several children.As far as I can trace, most of these are buried in Calvary Cemetery, a Catholic cemetery here in St. Louis.She re-married a "Nix" and I've lost the trail.There are several Downey children and I'm wondering if I can hook-up with any descendants of this branch.