The Lally Name: Records, Origin and Blazon
Sharing the Lally name is not the same as sharing a crest; arms were granted to individual families.
Family name meaning
Lally is a French surname. Smith's 1956 dictionary gives the meaning “one who came from Ally, in central France”.
Place names like this marked newcomers by where they had come from. In the 2010 US Census, 5,808 Americans gave Lally as their last name (rank 5,931). That puts it inside the top 10,000 US surnames. Lally sounds close to Lilly, so it can help to search both.
Get the complete Lally report, with a museum-style coat of arms.