Researching this family also! In addition to Samuel and Robert Horrocks, I show siblings James, Mary and Thomas. Robert left a will on 21 Jul 1832 at Warrington. There is an article in the "Leigh Journal" on 18 Mar 1887 regarding "Warren's Croft", a 12 acre farm in Lowton in which 22 Horrocks descendants had equal shares. I am just now sorting through old family letters and photos. Our branch came to the US in the 1860's. Is their father John Horrocks ca1726-1792? I have not had much luck finding birth records.