CREATE TABLE table_26368963_1 (under_15 VARCHAR2, under_19 VARCHAR2)

When Julian Illingworth was the under-19, who was the under-15?
SELECT under_15 FROM table_26368963_1 WHERE under_19 = "Julian Illingworth"
SELECT "under_15" FROM "table_26368963_1" WHERE "Julian Illingworth" = "under_19"