I hope I am in the right area as my knowledge of French Towns is non existant.
Looking for any info on the Delayen Family:
Delayen Joseph Francois b.1813 Boulogne
Delayen Prosper Francois b. b.1829 Boulogne
Delayen Amelie Therese Adele b. 1833 Boulogne - Married James Coward 1862 in Wimbledon
Delayen Edward b. 1842
Delayen Margaret b. 1847
Delayen Ernest b. 1849
Delayen William Leon 1851
Delayen Eugene 1852
Emigrated to England between 1851- 1861 some may have gone back in the late 1800's.