Complex sentence: He spent some of his early childhood on the Wirral Peninsula, and moved with his family to Llanfairpwllgwyngyll, on the Welsh island of Anglesey, where he went to primary school.
Split into simpler sentences: He spent some of his early childhood on the Wirral Peninsula. He moved with his family to Llanfairpwllgwyngyll, on the Welsh island of Anglesey, where he went to primary school.