Hello Betty & Rosie,
I am sorry to have allowed so much time to pass before responding to you. Life got in the way! But I am back looking at the Sewell family again, and have obtained a copy marriage certificate for Alfred Charles Rose & Annie Eliza Sewell from 1902 (thank you for the information you shared on this Rosie, which helped me locate it). I would be happy to share a copy of the certificate with you Betty, if you are interested. They were both 21 at the time of the marriage, so would have been born in 1881-ish. Annie Eliza's father is listed as William Sewell (deceased) and he was a greengrocer.
All the best,
Lisa