5. William De⁴ Mainwaring (Roger De³, Rafe (Ralph) De² , Roger De¹ Mainwaring) was born in Warmingham, Cheshire, Eng about 1276.

He married Agnes De Adrerne. Agnes was born in Alford, Lincoln, Eng about 1276. Agnes was the daughter of Peter De Aderne and Margery De Aderne MRS.

William was baptized a member of The Church of Jesus Christ of Latter-day Saints February 6, 1974. Temple Code: PV. He was endowed February 16, 1974. Temple Code: PV. He was sealed to his parents March 5, 1974. Temple Code: PV.

William De Mainwaring and Agnes De Adrerne had the following children:

+ 6 i. William⁵ Mainwaring was born 1225.

7 ii. Matilda De Mainwaring was born in Warmincham, Cheshire, Eng about 1310. She married William De Trussell.

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