Have you checked for any Bexar Co, TX court records placing the children in the W & O Home School?Records may tell why the father could not keep them after their mother died.If Isaac died 1903 or later, you can obtain a copy of his death certificate, which should show the names and birth location of his parents (if the informant had the information).I wouldn't think Veazey too common, you might check the 1860 Greenup Co, KY census for Veazey family with boy about 4 yrs old named Isaac Morton.That middle name sounds like a family name, perhaps his mother's, or grandmother's, maiden name.
TX Dth Idx Online: Morton Milton Veazey d 7-15-1969 in Dallas Co, TX.
Combined info CA Dth Idx & SSDI: Joseph H. Veazey b 3 Jul 1890, d 9 Jun 1964 in Los Angeles Co, CA, age 73 yrs, last residence in CA, and SS card issued in TX.
CA Dth Idx: Joseph Howard Veazey b 10-5-1925, d 2-26-1980, in Los Angeles Co, CA, age 54 yrs, mother's maiden name - Vela. (possible son of above Howard?)
TX Birth Idx Online begins 1926, here are children of Joseph Howard Veazey and Virginia Vela that show up on that index:
Veazey, Marie Virginia b 11-23-1926 Bexar Co, T. Veazey, Irene Beatrice b 8-8-1928 Harris Co, Tx Veazey, Robert Armando b 11-15-1929 Harris Co, TX. Veazey, Evangeline Bertha b 9-17-19