Actually, I am not positive it's his bro, but his name is Donald Lockhart,age 14 and he lives in VA.
he ran 27.8/59.4/5:08 on June 1st.
http://www.geocities.com/pvtc.geo/20030601.html
Other notable performance: 51.5 by 15yr old Chris Francis and 53point by 13yr old Charles Dunston.