Another name for Richard was Richard Arnell.
Source: The Founders of Anne Arundel and Howard Counties, Maryland by J. D. Warfield (Baltimore, 1905), p. 46
Richard married Martha Thomas, daughter of Lieutenant Philip Thomas and Sarah Harrison, after 1672 in Maryland, (United States). (Martha Thomas was born after 1651 in Maryland, (United States) and died before 1688 in Maryland, (United States).)
1 Thomas, Lawrence Buckley, The Thomas Book giving the Genealogies of Sir Rhys ap Thomas, K. G., the Thomas Family descended from him, and of some Allied Families (New York: Henry T. Thomas Co., 1896.), p. 34.
2 Warfield, J. D, The Founders of Anne Arundel and Howard Counties, Maryland. (Baltimore: Kohn & Pollock, 1905), p. 46.
Thomas, Lawrence Buckley, Pedigrees of Thomas, Chew, and Lawrance, a West River Regester, and Genealogical Notes (New York: Thomas Whittaker, 1883.), p. ii Register of the West River meeting.