Searching for Information on William Aitken Who with His Partner James Lilburn Formed the Glasgow Shipping CO IN Glasgow IN 1870 He is Related IN...

Emily Hill in 1869 and they lived at Burton Hill, Helensburgh and I have the names of all their children. James' father was Alexander Aitken
I would like any information on William himself, and his relationship to James. Also the names of James' siblings and any info on Alexander if anyone has any.