I've tried playing around with census indexes on your family, look what I came up with."Loss" is probably a nickname for Lawson, and look at the little girls Ora and Cora.What are the chances these are "family" names?
1880 census McLennan Co, TX:
NameRelation Marital Status Gender Race Age Birthplace Occupation Father's Birthplace Mother's Birthplace Benj. ALEXANDERSelfMMaleW21TXFarmerTNTN Mollie ALEXANDERWifeMFemaleW18TXKeeping HouseTNTN Loss ALEXANDERBrotherSMaleW23TXWorks On FarmTNTN Cora ALEXANDERDauSFemaleW5MTXTXTX Ora ALEXANDERDauSFemaleW5MTXTXTX
Do you know when and where any of those siblings of Lawsons were born?I'm just not finding amatch for him on the 1880 census, anywhere.(^_^)