Complex sentence: Hitch worked with several architects who used him to carve altarpieces, church furniture and other decorative features on churches they were commissioned to design and during his career he worked with architects such as John Loughborough Pearson, who provided Hitch with most of his commissions.
Split into simpler sentences: Hitch worked with several architects who used him to carve altarpieces, church furniture and other decorative features on churches they were commissioned to design. During his career he worked with many architects, most notably John Loughborough Pearson, who provided Hitch with most of his commissions.