Hi Rae, Cecil Mark Martin b. 30 Nov 1960, Harris Co. Father's Name-Ray Allen Martin, Mother's Name-Mary Alice Beadles. Source TX Birth Index.
Ray Allen Martin b. 7 Nov 1935, Wilson Co. Source: TX Birth Index.
Now that you know Cecil's full name, I'd use www.whitepages.com, www.zabasearch.com or www.privateeye.com to search for him in Houston and every city around Houston.
It's very difficult to find information about living people because of privacy, etc.
I didn't find anything for James with father Ray. I think James might have been adopted. Texas has a voluntary adoption registry for adoptees and their birth families. See Texas Dept. State Health Services, http://www.dshs.state.tx.us/vs/reqproc/adoptionregistry.shtmhttp://www.dshs.state.tx.us/vs/reqproc/adoptionregistry.shtm. Successful Searching!