Complex sentence: While recuperating, he married Winifred Mary Paton, who had travelled to England to join him, at the parish church in Oxted on 14 September 1915.
Split into simpler sentences: While recuperating, he was joined by his fiancé, Winifred Mary Paton, who had travelled to England to be with him. The two were married at the parish church in Oxted on 14 September 1915.