 Christopher agreed to shelter the future martyr Edmund Campion in 1569, at the request of Richard Stanyhurst (son of James), who was Campion's pupil.Campion spent several weeks at Turvey House and later acknowledged Barnewall's role in saving his life.James Stanyhurst was also involved in sheltering Campion, which suggests that despite their sharp political rivalry, he and Barnewall were prepared to cooperate on certain issues.