Rowden Lawson

Hi, I've been doing some gen stuff on my Lawson line and I was just curious if anyone had any info on a Sidney Rowden from around Dixon Missouri. he died probably in the mid to late 70's and was about 88 or 89 at that time. My interest is that he was married to one of my Grandmother's sisters. I was just curious if anyone had any info on him or his wife (my great aunt). Thanks for any info that can be provided. Allan