Pretty sure you have the marriage announcement for Richard King and Elizabeth Cryderman (010971-74 Richard W King 23, born Ontario, res. E. Gwillimbury, bachelor, farmer, s/o Joel and Hannah King, married Elizabeth Cryderman, 19, b. N. Gwillimbury, res. E. Gwillimbury, d/o Silas and Harriet (?) Cryderman, witn. Duncan King, Fanny Cryderman, both E. Gwill, Feb 11, 1874, Queensville E. Gwill).
Also, located a marriage record for the son of Richard King and Margaret Crydeman...19947 -24 Melville VIctor Howard, 23, farmer, Pt. Credit, Thorah Twp., s/o Henry Clarence Howard (b. Quebec) and Rachel Frances Vlower, married Florence Maud King, 19, domestic, N. York, Beaverton, d/o Richard Wm. King (b. Napanee) and Margaret Cryderman, Dec 23, 1924, Lindsay.
I have not been able to locate the marriage record for Margaret and Richard, or anything relating to Margaret's parentage. But I'll try to take another look.
Hope some of this helps, but you've probably already got it.
Maybe it will help someone else who is also looking!
Mary