After looking at the parish records for St. Owen, Hereford City I can confirm that Frederick James Hyett married an Alice Philpotts at St. Owen parish church 7 Mar 1871.
Frederick was listed as a 25 year old bachelor, resident of Llanwonno, Glamorgan. His profession was given as a Railway Police Constable and his father was Robert Hyett listed as a groom.
Alice Philpotts was listed as a 21 year old spinster, resident of Bath Street, Hereford. Her father was given as James Philpotts and his profession was given as a Police Constable.
Best wishes,
Bosuns Call