Bridson is a Manx name. The Gaelic form is Mylvreeshey, contracted
from the earlier forms Mael Brigde and Mac Giolla Brighde  --- son 
of the servant of Brighid (Breeshey, Brid), the triple goddess of 
the Gaels absorbed into Christianity as Saint Brigid of Kildare (feast
day 1 February). The first occurence of the name in Mann is on the fine

cross carved by Gaut at Kirk Michael at the beginning of the 10th century.

"Mael Brigde son of Athacan the Smith erected this cross"

The standard anglicised form,  Bridson, occurs frequently in the parish
records of Malew from the early 1600s. One strand of the family is recorded 
by an English scribe as Breden in the manorial role of 1557 and Bryden in
the manorial role of 1600 (which records that the family's rent on house 122 in
Castletown increased from 8d to 10d in 1570). The manner in which the names of
the tenants of  Ballavarkish were recorded in the 17th century provides an
insight into how the name mutated.