I have found some records related to your family which I hope will help you with your research:-
Deaths
Phoebe Evans, 65, at Queen St. Holyhead on 22 Mar, 1895, wife of policeman Owen Evans. Informant J. Williams, Queen St. Holyhead.
Owen Evans, 73, at Llanbadrig on 22 Jul, 1922, police officer (retired). Informant W.T. Roberts, nephew of Village Hall, Cemaes, Llanbadrig. (It seems Owen's age has been mis-transcribed, 93 is probably the correct age).
Grace Evans, 88, at Llanbadrig on 20 Jul, 1932, widow of police constable Owen Evans. Informant L. Jones, Ty Gela, Tregele, Llanfechell.
Marriages
Owen Evans, 27, labourer of Black Bridge, Holyhead son of Evan Evans, joiner. Phebe Jones, 27, of Holyhead daughter of William Jones, labourer. On 29 Dec, 1856 at St Cybi's Church Holyhead.
Owen Evans, 66, widower, police officer (retired) of 10 Queen St Holyhead, son of Evan Evans, joiner. Grace Hughes, 47, of 10 Queen St Holyhead daughter of Hugh Hughes, labourer. On 29 Oct 1895 at Armenia Chapel, Well St., Holyhead (both fathers deceased).
Births
Elizabeth Evans, father Owen, mother Phebe Jones on 8 Oct 1857, Holyhead.
Margaret Ann Evans, father Owen, mother Phebe Jones on 27 Oct 1861, Llangefni.
Evan William Evans, father Owen, mother Phoebe Jones on 29 Jan 1872, Llanidan.
Hannah Evans, father Owen, mother Phoebe Jones on 1 Oct 1866, Holyhead.