Marian and Agnes Wilder were the daughters of
James Lewelly Wilder, the son of
Francis L. Wilder, the son of
James Marvel Wilder, the son of
Grace Hosmer, the daughter of
Daniel Hosmer Jr., the son of
Bethiah Conant, the daughter of
Lot Conant, the son of
John Conant, the son of
Elizabeth Walton, the daughter of
Rev. William Walton of Marblehead, the son of
Margaret FitzWilliams, the daughter of
Winifred Mildmay, the daughter of
Walter Mildmay
A couple of bios of Walter Mildmay:
A Biography of Walter Mildmay from the History of Parliament Site
Walter Mildmay Founder of Emmanuel College at Cambridge University, England