Green’s Dictionary of Slang

(UK society) to spend Sunday with a person or persons.

1884		Lisbon Clipper 13 Mar. n.p.: H. R. Turner Sundayed in Fargo [DA].
1909		A. Rice Mr Opp 103: You read that Uncle Enoch Siller had Sundayed over at the Ridge [DA].
1909		J. Ware Passing Eng. of the Victorian Era.