. ▁The ▁est ates ▁were ▁most ▁common ▁in ▁S ve aland . ▁ ▁Its ▁orig ins ▁are ▁pre histor ic ▁and ▁unknown , ▁but ▁according ▁to ▁a ▁tradition ▁documented ▁by ▁the ▁th ir teenth - century ▁historian ▁S nor ri ▁St url us on ▁it ▁origin ated ▁as ▁a ▁don ation ▁given ▁by ▁the ▁god ▁Fre yr ▁to ▁the ▁Temple ▁at ▁U pp s ala ▁which ▁he ▁founded . ▁ ▁It ▁was ▁stated ▁in ▁the ▁Swedish ▁medieval ▁laws ▁that ▁U pp s ala ▁ö d ▁was ▁to ▁follow ▁the ▁royal ▁institution ▁int act ▁without ▁any ▁lost ▁property . ▁The ▁full ▁extent ▁of ▁U pp s ala ▁ö d ▁is ▁unknown , ▁but ▁individual ▁est ates ▁are ▁enumer ated ▁in ▁the ▁Law ▁of ▁H äl sing land ▁and ▁in ▁the ▁younger ▁West rog oth ic ▁law . ▁ ▁However , ▁during ▁the ▁th ir teenth ▁century , ▁the ▁system ▁became ▁ob sole te ▁for ▁the ▁king ▁and ▁then ▁many ▁of ▁the ▁est ates ▁passed ▁to ▁the ▁nob ility ▁and ▁the ▁church , ▁in ▁spite ▁of ▁the ▁laws ▁that ▁forb ade ▁any ▁dimin ution ▁of ▁the ▁property . ▁The ▁reasons ▁for ▁this ▁was ▁that ▁the ▁king ' s ▁subjects ▁began ▁to ▁pay ▁mon et ary ▁tax es . ▁ ▁U pp s ala ▁ö d ▁was ▁the ▁first ▁documented ▁pieces ▁of ▁what ▁would ▁become ▁Swedish ▁State ▁property . ▁ ▁A ▁selection ▁of ▁est ates ▁belonging ▁to ▁U pp s ala ▁ö d ▁Gam la ▁U pp s ala ▁Hus by ▁at ▁V end el ▁For