According to Douglas Richardson Henry & Joan had seven sons: Henry, James, John, Gerard, Knt., Robert, William, and Henry (second).
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Sir Henry de Soothill, of Soothill, co. Yorks. & c., eldest son and heir, had a grant from his father of lands in Soothill, Rawtonstall, Derton, Bolton and Laxton in 1349, and also of ëan annual rent of 40 marks from the manor of Soothillí. He then made a grant of his manor of Laxton to Sir John Geffray and Sir John de Croxton (ëchaplainsí) in 1350. He succeeded his father possibly in or before 1352, when he is stated to have appointed an attorney ëattorney for livery of seisin in his lands tenements and manors of Sutill', Benton' and Routonstal'. He entered into an indenture with William de Fyncheden 32 Edw. III (1358/9) concerning rents from 80 acres in Soothill granted to the vicar of the church of Batley, co. Yorks., which was probably the same land granted by his father in 1351/2 to William de Skargill.
He made a grant in 1362/3 for his life only of his manor of Rawtonstall, co. Yorks. to his younger son James for an annual rent of 10 Ω marks. [13] He soon thereafter (1363) granted his manor of Soothill together with Chidsall, Heckmondwike and other property to his eldest son Sir Henry in return for a payment of rent for his remaining life. In connection with this grant, he appointed Richard de Pillay as his attorney to deliver the manor of Soothill [15]. He married Joan _________, identified in Visitation pedigree of Soothill as Joan FitzWilliam [the assignment of this surname, and placement of Joan in the FitzWilliam family of Sprotborough, is unsubstantiated outside the Visitation record at present].
He probably died soon thereafter, but certainly no later than 1366. [John Ravilious, SGM, 6 Nov 2002]
Note: This is the alternative place for Joan FitzWilliam in the pedigree. John Ravilious puts her 3 generations later. I have put Joan in both places.