The meaning of Welby

Langer, who should have read Welby, writes of the meaning of "London", etc.

Roger Jones was commenting on "Welby" -- a place in Lincolnshire.

I read from wiki:

"Victoria Alexandrina Maria Louisa Stuart-Wortley married Sir William Earle WELBY-Gregory, 4th baronet. She and Sir William lived together at Denton Manor in Lincolnshire."

This is starting to look like Debrett's Peerage.