Charles County Maryland Circuit Court Records, Liber H#2, Page 219 23 Mar 1718; Recorded at request of Rev. William Maconchie: 2 Feb 1718; Indenture from John Allen, planter, to William Maconchie; for 4,000# tobacco; a parcel of land called Adventure; formerly surveyed by Owen Jones, dec'd, and granted to him by patent 20 Jan 1668; conveyed to Edward Knight, dec'd, on 4 Sep 1669; from him to Nicholas Beade on 2 Jan 1670; from him to John Allen 13 Jun 1693; located on the easternmost branch of the Avon River; laid out for 20 acres; /s/ John Allen (mark); wit. Robt. Hanson, Mattw. Stone, Andw. Troughton; 5 Mar 1718; ack. by John Allen and Catherine his wife.
Note here Catherine is listed as wife of JOHN.This John had a son Thomas, but he married a Susan Unknown.
John was the son William Allen of Charles Co. MD. I have most of this line worked and I am not aware of any other Thomas marrying a Catherine.