Complex sentence: Morris renamed his London town house Kelmscott House in honour of Kelmscott when he purchased it in April 1879 and named his private press, which he started in 1891, Kelmscott Press.
Split into simpler sentences: Morris renamed his London town house Kelmscott House after Kelmscott when he bought it in April 1879. He named his private press, which he started in 1891, Kelmscott Press.