there is in fact a very early , rejected , sketch of eriol 's life in which essential features of the same story are outlined -- the attack on his father 's dwelling ( in this case the destruction of eoh 's castle by his brother beorn , see citation ( 10 ) ) , eriol 's captivity and escape -- and in this note it is said that eriol afterwards 'wandered over the wilds of the central lands to the inland sea , wendelsae [ old english , the mediterranean ] , and hence to the shores of the western sea ' , whence his father had originally come .