Complex sentence: Despite becoming a world-renowned Halachic authority and a household name in the Jewish religious community, he lived modestly in Stamford Hill where he was consulted by rabbinical authorities and Jewish leaders from around the world.
Split into simpler sentences: Despite becoming a world-renowned Halachic authority and a household name in the Jewish religious community, he lived modestly in Stamford Hill. It was there that he was consulted by rabbinical authorities and Jewish leaders from around the world.