“…Hall notes two reasons. First, the marriage of cousins and of sibling sets-out of all other marriage possibilities-had a potent effect in concentrating wealth in land, labour, and/or capital precisely because it could counter the dispersive effects of American partible inheritance laws through the reduction of the number of divisions of inheritance in 2 For sources on cousins and cousin marriage in 18th-and 19th-century America, see, among others: Arner (1908), Brown (1951), Cashin (1990), Censer (1984), Faber (1972), Farrell (1993), Gough (1989), Griffen & Griffen (1977), Hall (1977Hall ( , 1978, Kulikoff (1976Kulikoff ( , 1986, Ottenheimer (1996), Reid (1988), Smith (1980), Supple (1997), Vernon (1979), Wiencek (1999), Wright (1889), and Wyatt- Brown (1982). 3 Sibling-set marriage refers to cases in which two brothers in one family marry two sisters in another, or a brother and sister in one family marry a sister and brother in another.…”