Eureka .. the 1908 OS map.
From the 1845, 1875, 1908 and 1936 maps can be seen the typical development of almost any area.
Fields and hedges are determinined by water courses, rocks, escarpments, ditches, natural tree lines, bogs, tether limits for bulls or for goats (for example), who owns what at any given time of sale or payment of debts, the need to transport agricultural goods, or mining goods, etc ... As the town develops, the vestiges of the previous era remain. It is the same anywhere.