Complex sentence: Palmer took his first school lessons at the Hambrook School (Hambrook), enrolling there on 30 August 1926, as recorded in the "Admission Register 1922--1946".
Split into simpler sentences: Palmer took his first school lessons at the Hambrook School (Hambrook). Then he attended or enrolled the Hambrook School in 30 August 1926, as reported in the "Admission Register 1922--1946".