Hi Cathy, In 1900 Lorenzo T. Wilson was living with his brother in Gilead, Morrow Co., OH.
In 1910 L. T. Wilson and Mille C. Wilson were living in Maple Lane, Clackamas, OR. L. T., marr 1 year, b. OH, 30 yrs old, general farmer. Millie C., b. OR, 20, no children.
Lorenzo Thatcher Wilson was living at 296 Molalla Ave, Oregon City, Clackamas Co Sept. 12, 1918. He was b. 12 Oct 1879. Occupation-Road construction laborer. Employer=John Moffit. Place of Employment=Canemah. Spouse=Nellen Wilson, same address as above. Source: World War I Draft Registration cards 1917-18, www.ancestry.com.
In 1930 Lorenzo and Miller were living in Colton, Clackamas Co. Lorenzo T., b. OH, 51, marr @ 28, general farmer. Millie A., b. OR, 40, marr @ 17.
The Infant son of Lorenzo Wilson d. 12/6/1922, Clackamas Co. Source: County Register, Vol 3, p. 32, Oregon State Archives, http://genealogy.state.or.us/http://genealogy.state.or.us/ .
I'd say they didn't have other children but a good way to be sure is to request copies of their obituaries. They both died in clackamas co.Millie d. 14 Jan 1964, per death cert #64, Age=74. Source: Oregon Death Index 1903-98, www.ancestry.com.
Random Acts Genealogical Kindness has a volunteer Mari who might look up the obituaries. Go to www.raogk.org, read instructions, choose Oregon, choose Clackamas and look for Mary.
The Oregon Library System, www.oregonlibraries.net/ might have one in clackamas co. who provides an obituary service. You can ask them at their web site. Successful Searching!