serviceyears death_date birth_date rank article_title name type
1430s-1450s 1448 fl . 1430 captain william aleyn
 william aleyn pirate
william aleyn

william aleyn -lrb- fl .
1430 -- 1448 -rrb- was a 15th-century english pirate .
during the 1430s and 40s , he raided shipping throughout southeast england and sometimes worked with william kyd in the thames and the english channel .
like others of his trade , aleyn operated freely and without interference from authorities while under the protection of corrupt custom officials .
