I am collecting references to the sizes of yardlands and acres in different parishes in Buckinghamshire. If anyone knows of any source for the size of the local yardland or acre in any parish or township or manor in the county I would be very grateful for details of it. And since the size of the local acre itself depended on the length of the rod/pole/perch used to measure land in that place, any information on those would also be received with gratitude. Some explanation of what I mean by the local yardland, acre and rod/pole/perch might be useful. YARDLAND: in the late middle ages, and in some places well into the modern period, the standard landholding unit was the yardland, also known as the virgate. Its size varied from place to place. It could be as little as 10 acres, or as big as 80 acres or more, though 25-30 acres was probably the most typical size. However all the yardlands in any given manor were always the same size - the variation was only between the yardlands of different manors or parishes. Quite often old records will mention the size of the local yardland - it is references of this sort that I am hoping to hear about. ACRE, and ROD/POLE/PERCH: again, the size of the acre varied from place to place. A measured acre was always an area 4 rods wide and 40 rods long, but the length of a rod (also called a pole or perch) varied throughout England. The most common length was the statutory one of 16 and a half feet (which is the one we use today), but in many places shorter or longer rods were in use, and these resulted in smaller or bigger acres. Common lengths for local or customary rods were 16 feet (which gave a customary acre equal to only 0.94 of a modern acre), 18, 20, 22 and 24 feet (respectively 1.19, 1.47, 1.78 and 2.12 modern acres). Old records almost never stated explicitly how long the local customary rod/pole/perch was, but they did sometimes give the area of the same piece of land in both statutory and local acres - which makes it possible to work out the ratio. If anyone knows of any such document I'd be very pleased to be told about it. Thank you, Matt Tompkins Blaston, Leics