I'll tell you, I luck out sometimes and it's getting to happen more ofter with additional records going online.
I use google and in the search bar I put:
"Adams Charles Arthur" marriage Derr
If it didn't find anything then I would reduce it to:
"Adams Charles A" marriage derr
and keeping reducing it.I did the same for the other marriage but didn't find anything.I would assume the second marriage would be in Harris county and should be on the county clerk site.I checked Galveston County to no avail.
Brookside Cemetery is in my area if you NEED a photo.