Please help identify maker/ pattern

[Atocha]

I recently unearthed some pieces, and have spent the afternoon learning a LOT about silver patterns, manufacturers, and hallmarks. Despite the whirlwind lesson, I still cannot identify the hallmarks for certain, and would appreciate your expert knowledge to help identify them.

[silverly]

Welcome to the forum. It's Lancaster. Take a look here: http://www.925-1000.com/patterns_Gorham_11.html